Which cars have a reliable automatic transmission. Automatic transmissions: which are the most reliable? Benefits of a manual transmission

Hyundai Solaris

A six-speed hydromechanical automatic machine is “mixed” with a 1.4 engine (107 hp). The asset of the car is a recent restyling, excellent equipment and amazing liquidity in the secondary market. "Automatic" sedan costs from 549,900 rubles (hereinafter, prices are indicated as of the beginning of December, when the issue was being prepared for printing. - Ed.) . The hatchback is 10,000 rubles cheaper.

Lifan Solano

The Chinese sedan is equipped with a 1.6 petrol engine and a CVT with five virtual gears. Price - 519 900 rubles.

Volkswagen Polo

A 1.6-liter petrol engine with 105 horsepower is paired with a six-speed automatic. Ask for this tandem 519 000 rubles. In the pros - the prestige of the German brand, a decent trunk, good equipment.

Nissan Almera

A sedan with a 102-horsepower 1.6 engine and a four-speed automatic transmission is interesting not only at a price below the psychological barrier of half a million ( 482,000 rubles), but also a spacious rear seat, a huge trunk and a comfortable suspension.

Chery IndiS

Chinese front-wheel drive pseudo-crossover stands 474 900 rubles. He has a five-speed automatic, and a 1.3-liter engine produces 84 hp. Intricate appearance and a complete lack of chances to take good money for a car when reselling in three or four years.

Lada Priora

Togliatti centenarian in the most expensive configuration ( 474 300 rubles) equipped with a robot: this is a standard five-speed mechanics with an actuator from ZF. AvtoVAZ made this box for a long time, so the robot turned out tolerable - without excessive jerking when switching. Another plus is the choice of three body types.

Daewoo Gentra

A sedan with a one and a half liter petrol engine (107 hp) and a six-speed automatic is sold for 459,000 rubles. A car for those who, before retiring, want a foreign car with a gun and a huge spare parts market from a relative of the Chevrolet Lacetti in all regions of the country.

Lada Kalina

Prettier after restyling, the hatchback (or station wagon) flaunts a simple and reliable hydromechanical four-speed gearbox in combination with a 1.6 engine (87 or 98 hp). Price from 425 000 rubles. Plus, sparing prices for maintenance, service and spare parts.

Renault Logan (first generation)

The eternal companion of taxi drivers, pensioners and everyone who cares about the content is more important than the form. sedan for 405 000 rubles equipped with a proven 1.6 engine (103 hp) and a four-speed automatic. The machine is old, thoughtful, but copes with its main duties. In addition, the sea of spare parts on the market and a bright future in the secondary market.

Lada Granta

Now it is also offered with a four-speed automatic, which is combined with a 98‑horsepower 1.6 engine. Such a car in the Norma configuration is sold for only 383,600 rubles - with air conditioning, airbags, power windows. It doesn't get cheaper.

When choosing a vehicle, potential car owners pay attention to how long the engine and gearbox are designed for. The main characteristics of reliable automatic transmissions should be considered.

Advantageous features of automatic transmission

Automatic box diagram

The automatic transmission is found both in urban passenger cars as well as trucks and passenger vehicles. The automatic transmission is based on a torque converter, a control system. Automatic options may have a manual method for changing speeds.

A car with an automatic transmission option is often chosen by novice drivers. Learning to drive such a car is easier for an inexperienced driver. Since the choice of speed modes occurs quickly, the motorist can concentrate on the road as much as possible. The rating of reliable automatic transmissions is headed by Toyota, Kia, Hyundai.

Reliable automatic transmissions

What automatic transmissions are the most reliable? automatic boxes gear shifts vary by resource. The following versions are designed for a maximum of 700,000 km of run:

Mercedes;
Toyota A.

According to experts involved in testing vehicles where these transmission options are present, the A340 model is recognized as the most reliable automatic transmission.

Repair of the box may be needed even before the specified period, if the car was operated in difficult conditions, due to which the clutches and oil seals wear out. These consumables must be replaced.

If you adhere to a measured driving style, diagnose the speed box in a timely manner, at least 450,000 km of run, the following options can function:

Toyota A750;
4F27E(FN4A-EL) for Mazda or Ford;
Jeep A904;
ZF 5HP 24/30.

It is necessary to characterize the features of each of the listed models.

Gearbox for Toyota, Ford, Mazda, BMW

Toyota A750 can be found on Toyota SUVs (for example, the Land Cruiser model), as well as Lexus. A feature of the gearbox is that it effectively copes with heavy loads. The risk that there will be a need for repairs even before 400,000 km of run is minimal.

4F27E (FN4A-EL) is a type of gearbox that is unpretentious in operation, which can be found on a foreign front-wheel drive Ford car, for example, Ford Focus, Fiesta. It should be noted that during the repair it is not required to remove it from a regular place. Model 4F27E is suitable for Mazda. Among the problems that can occur towards the end of the life cycle is a stuck solenoid.

Not last place the Jeep A904 box is different in terms of reliability. It quickly provides a gear change without the participation of the driver. Untimely replacement of oil and filters, as well as the use of low-quality fuel, leads to a reduction in the life of the automatic transmission. Repair of this unit is not difficult.

On the BMW 5th series, there is a ZF 5HP 24/30 box. Its distinguishing feature is an increased margin of safety. Aggressive driving, slipping are the reasons why a gearbox repair may be necessary at 500,000 km. This box is installed on Range Rover vehicles. Version 5HP24A can be found on the Audi A6, A8 with front-wheel drive. After 100,000 km, the BMW owner may experience overheating of the machine. Overheating of the box leads to accelerated wear of friction clutches, couplings.

Automatic transmission for Volvo, Opel

AW 55-50SN / 55-51SN

Volvo and Opel cars can be equipped with AW 55-50SN / 55-51SN gearboxes. They have 5 steps, while the volume of the power plant can exceed 2 liters. The high performance properties of this transmission are the main advantage of the gearbox. Also, this unit lends itself to repair and restoration work.

AW50-40LE (4 st.)

For Opel Astra H, the automatic transmission model AW50-40LE (4 stages) is suitable. According to the regulations, at 60,000 km, the transmission fluid needs to be replaced. About 12 liters of new fuel is poured into the box. The clutch is designed for approximately 120,000 km.

A340 (Aisin)

On the Volvo XC90 crossover, the A340 (Aisin) automatic machine can be installed. The box is typical for cars with rear and all-wheel drive. With a timely replacement of fuel, the automatic transmission will work for several hundred thousand kilometers.

Expensive types of automatic transmissions to maintain

What speed boxes are not reliable, expensive to maintain? Among the types of automatic transmissions that are expensive to maintain, the following versions should be distinguished:

Jatco JF011E;
Audi DL501;
LUK 01J.

Jatco JF011E Audi DL501 LUK 01J

These options are expensive to restore. In particular, repair latest model may exceed several thousand dollars. There is a continuously variable transmission LUK on Audi (A5, A6). The motorist may encounter the first problems at 120,000 km. The need for repair of this gearbox is indicated if there are vibrations when changing gears or shocks are felt during this process.

On the above versions of Audi, as well as the Q5 model, the S-Tronic Audi DL501 box may be found. Its repair is no less expensive than LUK 01J. A distinctive feature of the DL501 is that it has 7 gears. Not every car service takes on the repair of this checkpoint. On an Audi car, it is periodically worth checking the condition of the drum bushings. When they are deformed, jerks are felt when changing gears.

On a number of crossovers, the Jatco JF011E stepless gearbox is found, for example, Nissan Qashqai, X-Trail, Renault Koleos. Here there is an optimal waste of fuel per 100 km, a change in speed modes occurs quickly. CVT box is light weight. With aggressive operation, premature wear of the bearings of the tapered pulleys can occur. As a preventive measure, the motorist should monitor the change in sensor indicators.

AL4/DP0 is among the unreliable ones. It is equipped with Peugeot Citroen. Unreliability is expressed in the fact that TO-4 may have problems with solenoids. They lose their working properties due to the loads on the automotive system. This box has a fully electronic control, several forward gears, including a reverse gear. Timely replacement of the transmission fluid contributes to the extension of the automatic transmission.

In 1998, the above automatic transmission was finalized, the modification became known as ZF5HP24A. The peculiarity was that they began to install it on all-wheel drive cars. Not surprisingly, the ultra-reliable box was adopted by Audi engineers and began to install it on the A6 and A8 Quattro models.

Later, a modification of the automatic transmission was released with the ZF5HP30 index. This box was only used for rear wheel drive vehicles. In those years, the box, reliable and quite in demand by ZF, debunked the myth that powerful engines quickly “kill” automatic transmissions.

The practical operation of the ZF5HP24 and ZF5HP30 clearly demonstrated the high reliability of automatic transmissions on vehicles with powerful internal combustion engines, since these automatic transmissions take care of up to 600 thousand kilometers without any problems.

Next on the list for reliability is the 5L40E automatic transmission. Automatic transmission manufacturer General Motors (GM). The 5L40E box had five steps and was able to go up to 500 thousand km without repair. This unit has been produced since 1998, it was installed mainly on cars of the BMW 3 series, Cadillac, etc.

Since the beginning of the 2000s, the manufacturer has put on the market a modification of these boxes for cars with all-wheel drive. The very first BMW X5 models that just rolled off the assembly line were equipped with just such an automatic transmission. Later, the transmission began to be installed on GM cars, and on different models equipped with only rear-wheel drive, with medium-power engines.

Production of the 5L40E automatic transmission was discontinued in 2007. The next model, which replaced the 5L40E, was a six-speed automatic transmission with the 6L50 index. This box also retained its reliability, although it became more complex in design. According to statistics, with proper maintenance, the unit calmly nurses 400-500 thousand km.

Next comes the legendary Japanese five-speed automatic transmission A750F manufactured by Toyota. This box has the glory of a non-killable machine gun, known from Toyota models Land cruiser Lexus. Statistics show that these gearboxes last more than 600 thousand km without major repairs.

This automatic transmission in various modifications is still actively installed on Toyota cars. It is noteworthy that this version of the automatic transmission does not provide maximum speed performance or high speed gear changes, and also does not allow significant fuel savings.

However, Toyota continues to produce models with the A750F automatic transmission. At the same time, the manufacturer itself positions the unit as the most reliable automatic transmission in the world, which simply does not exist.

Closer to the end of the list of outstanding automatic transmissions in terms of reliability is the automatic transmission Mercedes722.4. A Mercedes box with an index of 4 can be safely called eternal. This machine outlasts the cars themselves, as the unit serves about 1,000,000 km. without repair, subject to timely maintenance.

The production of this automatic transmission began in the 80s, when cars were famous for their reliability and long service life of all units. This box was installed just on such legendary cars as the Mercedes 124 and 190.

The margin of safety of these automatic transmissions turned out to be so great that they were paired with any engines, regardless of the power of the internal combustion engine and the number of cylinders. At the same time, the automatic transmission 722.4 turned out to be more durable than the engine.

The leader of the rating was a 4-speed Japanese automatic transmission A340. This reliable automatic transmission is able to cover 800,000-1,000,000 km, without much attention in the service. The box is universal, it was installed on cars with front and rear wheel drive, as well as on all-wheel drive versions of cars.

An early version of the automatic transmission had 4 steps, but since 1986, Toyota has released a 5-speed modification of this automatic transmission under the A350 index. The manufacturer installed such boxes everywhere on 4Runner, Supra, premium Lexus (GS, LS) cars, etc.

In terms of reliability, the five-speed automatic is no worse than the previous version, except that, for example, after 500 thousand km it will be necessary to replace the oil seals. After such a repair, the unit travels another 500 thousand km.

What is the result

As you can see, an automatic transmission can not only have a great resource, but turn out to be ultra-reliable and survive not only the engine, but the entire car. Moreover, the maintenance and repair of such automatic transmissions also does not cause any special problems.

During the development and production of such units, the main emphasis was placed on the service life, these automatic boxes met all the requirements of the car manufacturer, were fully combined in their own way. technical specifications with power units that the plant installed on its models.

Unfortunately, on this moment the automatic transmissions discussed above have been discontinued. Probably, their reliability is contrary to the current policy of all global automakers. However, if you need to buy a used car, there is still a chance to find a car equipped with one of the above automatic transmissions.

In this case, the presence of such an automatic transmission can be a big plus in a used car. If such a box is broken for one reason or another, you can either repair the existing one or buy it in good condition.

Which used cars have the most reliable automatic transmissions

The desire to buy a used car with an automatic transmission often borders on the realization of a high risk of spending impressive funds to repair or replace the unit.

An automatic transmission is a complex system, but with proper maintenance, it works for several hundred thousand kilometers without failure or failure. At the same time, the number of gears is constantly increasing - 15 years ago four were enough, now their number has increased to 7, 8 and even 9. This complicates production, and with it repair and maintenance.

Just about a decade ago, an automatic transmission in a car was perceived as the worst thing - slow, unreliable in the long run. Overseas, manual transmissions continue to lead even in the small city car segment. On the European continent, the percentage of sales of cars with automatic transmissions is constantly growing. But in many market segments, “automatic machines” are still a rarity.

To understand the specifics of automatic transmissions, they must be systematized. Under the classic concept of "machine" hides a variety of designs. These are hydrokinetic transmissions, planetary systems.

"Classic", CVT or DSG?

The advantage of the "classic" automatic transmission is the elimination of the need to change gears. Currently, there are many models of "robots" that make the movement of cars smooth and dynamic. This increases fuel consumption compared to mechanical counterparts.

The “classic” automatic is effective in off-road conditions, as it does not interrupt traction due to gear changes. This is a good help when driving on sand or driving uphill. When transporting a loaded trailer, you do not need to worry about the destruction of the clutch, since it is absent in this arrangement.

Other designs of boxes are also on the market. IN last years dual clutch transmissions. They have even gears on one shaft, and odd gears on the other. When one shaft is running, the other is ready to be connected. This improves shift efficiency, and the absence of a torque converter saves fuel and eliminates power loss.

Another option is a CVT (continuously variable) transmission. Theoretically, this design is the best, based on the fact that the gearbox must constantly adapt to the driving style in relation to the dynamics and capabilities of the engine. But instead of high efficiency, owners often get engine “shutdown” and mid-level dynamics. Automated gearboxes are classic transmissions complemented by automatic clutch control.

How to buy a used car with a working "automatic"

Experts recommend checking the transmission before making a deal. When the modes are turned on, noises, jerks should not appear, the lever should move smoothly. A symptom of problems is slipping after shifting into gear.

The check is carried out by sharply pressing the gas pedal. A serviceable gearbox reduces speed gradually, without jerking and slipping. Malfunctions are indicated by an increase in revolutions (by several hundred) during the transition to higher gears with a slight delay and a sharp drop. You also need to check the transmission for leaks.

Experts recommend when choosing a used car to consider the following points:

the fewer modes the "automatic" has, the older it is, but thanks to this, repairs can be simpler and cheaper;
the presence of a torque converter is a guarantee of increased fuel consumption, reduced efficiency.

You need to know this in order to make the right decision, for comfortable operation of the gearbox in the future.

Where to repair "machines"

Not every workshop undertakes diagnostics and even dismantling of “robots”. This is due to the need to have practical experience and special equipment. In addition, the problem is the purchase of components for restoration. Only filters and other materials needed to perform maintenance are publicly available.

Repair costs are determined by the model of the box, the degree of damage to the elements. The price of torque converter restoration is the same for all types of transmissions, but the cost of other elements (planetary gearboxes, baskets) can vary significantly. The exact repair price is determined only after the dismantling of the gearbox, disassembly, troubleshooting.

New is not always good

Modern "automatic machines" have similar problems with engines. The desire to reduce production costs led to premature cracking of the clutch baskets, wear of the elements of planetary gears. At the same time, the price of spare parts for old automatic transmission models is ten times higher than for modern “robots”. Another factor to consider is the soaring engine power, which negatively affects the performance of transmissions.

The rise in price and complexity of the design provokes an increase in modes. This is due to the need to install more electronics. The result is an increase in repair costs.

The drivers themselves are also to blame for the premature wear of less reliable, but technologically advanced modern “robots”. A sporty driving style accelerates the destruction of structural elements. Even fast driving leads to overheating of the box. Installing an additional oil cooler will solve the problem. The replacement of regular couplings with reinforced ones will reduce wear.

When buying a car with an "automatic" it is necessary to show it to specialists. Only qualified craftsmen will be able to determine whether the transmission was serviced according to the schedule, what fluids were used for this. Incorrect towing of the car also leads to damage.

What else the experts say

It is the complexity of automatic transmissions that scares buyers. The demand is reduced by the high cost of repairs, the need to contact qualified craftsmen. But at the same time, experts argue that modern transmissions, if they are properly operated and serviced in a timely manner, will thank stable job without crashing. Besides latest versions Automatic transmissions, even on cars with powerful engines, do not greatly increase fuel consumption.

"Classic" automatic transmission

Such a transmission is also called hydraulic, as the drive is activated by oil pressure. Therefore, the use of the correct lubricant type is very important. The torque here is transmitted from the motor to the transformer. The most important structural elements in "classic" machines: planetary gears, brake and disc clutches - are responsible for activating and stopping the planetary gear components. Belt brakes are also used for this. Here, a 4x4 drive is used, where the torque is fed to the center differential.

The most vulnerable places of "classic" automatic transmissions:

hydrokinetic transmission;
discs and clutch brakes. They wear out sequentially during the operation of the gearbox, overheating and local damage are also possible;
oil pump. Correct pressure is very important, as the oil not only lubricates, but is also responsible for displacing the elements;
clutch baskets;
elements of planetary gears.

The cost of repairing and replacing these components depends largely on the transmission model.

Transmission Operating Rules

Driving a car with an automatic transmission is easier than with a manual one - there is no need to depress the clutch, select gears. However, a few rules must be followed. For example, when stopping at a traffic light, move the selector from "D" to "N", as this often limits the movement of lubricant in the box (the oil pump is usually mechanically driven). In addition, the driver loses dynamic acceleration when passing through an intersection.

Another common mistake is shifting too quickly to "P" when the car continues to roll. In older models, higher gear ratios were blocked, which made it easier to move in the mountains, towing a trailer. The solution for modern "machines" is sequential gear shifting.

ZF boxes

The first "automatic" was installed on a passenger car in 1965 (model 3HP12). In the designation, the first number indicates the number of gears (this model had only 3). The number at the end means the permissible engine torque (there is no ambiguity here: for example, in 5HP19 it is 310 Nm, and in 6HP19 it is 400 Nm).

In the used car market, the most common versions are 5HP (18-30) and 6HP (19-32). We are talking about millions of cars, most of which have been in operation for more than 10 years, with runs estimated at hundreds of thousands of kilometers. In the "five" frequent malfunctions are the lack of reverse gear (broken basket) and the low efficiency of the oil pump. In the ZF6, problems often result from cracking of the input shaft basket.

A box with 8 steps is often used in sports versions of cars. Top modifications are capable of transmitting up to 1000 Nm of torque. Since 2013, ZF has been producing 9 HP efficiency boxes. With.

ZF automatic transmissions have been installed in a huge number of models. The 5HP version is equipped with almost all BMW cars produced from 1991 to early XXI century. Numerous versions of the Passat B5, Audi A4 B5 and A6 C5 were also equipped with these transmissions.

The box also went to the Porsche 911 (cars until 2003). The 6HP version has become more widespread, ranging from various modifications of Aston Martin, Audi (including Q7) and Jaguar, ending with Rolls-Royce and VW Phaeton. An 8HP gearbox is installed on many cars: these are Lamborghini Urus, VW Touareg I and II, various BMW models, Rolls-Royce or Alpina.

Aisin boxes

Aisin is a Japanese company closely related to Toyota. It is one of the largest transmission manufacturers in the world. The lineup includes reliable examples such as the Toyota A-series gearboxes: A750 and A760. They have been equipped with SUVs, including Lexus, for the last 10 years. One of latest projects Aisin is the world's first AWF8F35 8-speed transverse gearbox developed in 2013.

The AW 55-50 (transverse 5-speed transmission with front wheel drive for the 4x4 version) is fitted to many Opel and Volvo cars. Also these brands use models AF33 and FA57. Their weakness– solenoid valves of the controller. The problem is eliminated by replacing the entire module with the subsequent adaptation of the box. At Saab and Opel, owners are facing cooler oil leaks.

At the same time, despite the technical similarity, boxes from different models are often incompatible. To preserve the motor resource and extend the service life, experts recommend not to pick up speed sharply in winter time, avoid frequent oil changes (this should be done after 60,000 kilometers). Although manufacturers set lower limits. Experts also recommend using a lubricant that complies with JWS 3309.

Aisin automatic transmissions installed several dozen brands on their cars. The company supplies "robots" for most Toyota models. This is the A series, which appeared in the 1950s, the A750/760 is installed on the Toyota Land Cruiser 120, 100 and Hilux, Lexusy IS, GS. The AWF8F35 transmission is equipped with Opel Insignia, Peugeot Rifter, DS 7.

The "automatic" AW 55-50 debuted in 2000 in Volvo cars: 40, 60 and 70. It was also installed in the first generation Kadya (2.5T engine), Renault Laguna II V6, Opel Vectra C and Signum and almost all Volvo models , including XC90 from 2000-03.

Aisin AF40-6 or Geartronic

This automatic transmission is also designated AWTF-80 SC, or TF-8 and stands out from the Japanese manufacturer's lineup. The unit is distinguished by low weight (only 90 kg), compact dimensions (length - 36 cm). The maximum permissible torque is 440 Nm. The box is installed on many popular models.

The unit is in demand among auto manufacturers due to its compact dimensions. It can be found on BMW i8, Fiat Group: Alfa Romeo 159, Brera and Spider, Fiat Croma, Lancia Delta. The transmission is also installed on Ford Mondeo (in European and American versions), Mazda 6, CX-7, CX-9. The unit is also used by Land Rover (Freelander 2, RR Evoque), Jaguar (X-Type), Peugeot, Citroen.

Its owners are often faced with the failure of the basket, breakdown of solenoid valves. And the controller itself is not reliable, subject to mechanical wear. Experienced craftsmen recommend changing the oil more often (volume - 7.0 liters, it is recommended to pour Dexron VI) in a dynamic way to reduce the risk of malfunctions. At the same time, the manufacturer claims that it is not necessary to change the lubricant.

GM automatic transmission

Abroad, the production of automatic transmissions began in the 40s of the XX century. The pioneer was the giant of the global automotive industry - General Motors. Currently, the most common transmission is 6T40. Its mass production was launched in 2008, the unit is designed for light vehicles. The box itself is compact, weighing 70-90 kg, offering a large gear range.

The 6-speed transmission was first installed on the Chevrolet Malibu 2.4 in 2008. In the same year, Cruze, Daewoo Lacetti and several other cars supplied to the American market began to be equipped with it. In Chevrolet, the box is most often combined with a 1.8-liter engine. In Europe, the most common models with this transmission are: Astra, Meriva. In these cars, it is usually paired with a 1.4-liter supercharged or 1.6-liter naturally aspirated engine. The six-speed "automatic" 6T40 is still installed on new cars.

A typical failure of this transmission is the appearance of cracks in the spring ring (has a wavy configuration) of the clutch. Metal chips, along with oil, enter the unit and lead to premature wear of the components.

Changing the oil every 60,000 km will help prevent critical damage. That's the only way you can see the chip. It is worth noting that the previous model of the “automatic” GM with the designation 5L40 (in addition to American cars, was installed on BMW) received high marks from specialists in terms of reliability.

Automatic transmission Jatco JF506E

Jatco is a Japanese company specializing in the production of automatic transmissions. This is a structural division of Nissan. Produces Various types transmissions (for example, JF011E, known from Nissan and Mitsubishi cars), as well as classic "hydraulic" gearboxes (currently 7-speed).

A popular gearbox (not only for Nissan) is the JF506 model. This 5-speed gearbox weighs 90 kg. It was installed on cars with an engine located transversely in front (front-wheel drive or 4x4 system). Unit layout: classic body with 4 clutch baskets, 2 disc brakes and one belt. There are 9 solenoid valves in the control system. The capacity of the box is 9.0 liters, a special lubricant is used.

Owners of cars with this transmission often experience oil leaks and jerks. This leads to the failure of the solenoid valves. When the aluminum piston wears out, 3rd and 5th gears, as well as reverse, disappear in the clutch basket (mechanical damage to the brake band and its hitch also leads to this). When servicing the box (oil change), it is important not to confuse the tank cap with the bolt holding the brake band.

An interesting fact: the Jatco JF506 transmission was not used by Nissan, but was installed on cars of many brands: Japanese, German and British. The unit is found in Mitsubishi Lancer Evo (VII and IX, GT-A versions), Mazda 6 and MPV, Mondeo MkIII and Galaxy, Volkswagen Golf and Sharan, first generation Audi A3, Jaguar X-Type and Land Rover Freelander I. Version from 6 speeds Jatco JF613E was installed on Nissan Qashqai, Renault Scenic and Laguna.

Mercedes boxes

In the 80s and 90s of the last century, Mercedes produced extremely reliable 4G Tronic gearboxes (722.3 and 722.4). They are calibrated to reduce engine and component wear in all conditions. In most cases, the car starts in second gear, which provides a smooth ride and reduces the number of jerks.

Between repairs, these checkpoints cover hundreds of thousands of kilometers. The 722.5 gearbox has an additional electrically controlled fifth gear, considered to be more durable. The "automatic" masquerading as "722.6" (trade name "5G-Tronic") is more controversial. It is based on electronic control and torque converter lockup. While the transmission was installed on cars with not very powerful engines, there were no serious problems.

They appeared when the unit began to be combined with diesels. Without major modifications, the box was installed on powerful versions of the S-class, such as the ML with a 4-liter diesel power unit. The huge torque of the motors led to the need to carry out repairs every 50,000-100,000 km. More modern options Mercedes boxes - 7-speed 722.9 and the latest 9G-Tronic, designated 725.9.

Experts rightly point out the high reliability of the "machines" of the German brand, produced in the 80s and 90s of the last century. For example, 4G-Tronic was installed on models 190, W124, W126 and today it is operated without problems. The “automatic” 722.6, which was equipped with class C, E and S models until 2013, did not differ in capriciousness. It was also installed on the first generation ML (W163) and class G. This is where the problems started.

Automatic 722.6 can be found in cars SsangYong, Jaguar (XJ and XK) and even in Porsche. The next generation of 7G was installed on all models German brand, as well as Korean cars. The latest 9-speed variant is already included the lineup Mercedes.

Rules for the maintenance of automatic transmissions

Many car manufacturers claim that the oil does not need to be changed. Experienced mechanics say that this is done regularly after passing a certain mileage. Who to believe? Practice shows that the truth lies in the middle.

In fact, there are transmissions that do not require an oil change. At the same time, this procedure extends the life of most transmissions. In addition, drained grease may indicate malfunctions (presence of metal chips, foreign impurities). Along with the lubricant, it is also necessary to change the filter (they come with pallets or separately).

Another important point- Is it necessary to change the oil only in a dynamic way? Some experts say that a standard drain is also suitable, since you do not need to use special equipment and reduce lubricant consumption. At the same time, it is proved that the replacement by the dynamic method is more efficient.

Other versions of automatic transmission

These are the so-called DSG - transmissions with two clutches (VW are widely introduced). The units are designed for high speed - it is provided due to the readiness of the computer to activate the next gear at the right time.

The DSG (Direct Shift Gearbox) is a five-shaft robotic gearbox. The shafts are connected by gears and two clutches. In addition to two clutches, special electronic algorithms are used in gear shifting. It is he who allows you to minimize the switching time, as if preparing the subsequent gear for switching. What is reflected in its second name - "preselective checkpoint".

An important technical side of the DSG is the presence of two primary and two secondary shafts. Each secondary shaft is engaged with its corresponding primary. On some shafts, gears of even gears are installed, and on others - odd ones.

There is no doubt that technology will continue to develop. Maybe in a few decades, more advanced and reliable devices will replace the “automatic machines”, but for now it is necessary
take seriously the choice of a used car with such a transmission, as well as properly and timely service it. This is the only way to avoid serious technical problems.

MOSCOW, September 6 - RIA Novosti, Sergey Belousov. More than half of new cars sold on Russian market are equipped with automatic transmissions (AT). At the same time, the lion's share of "automatic machines" is a few models that are installed on hundreds of thousands of machines. RIA Novosti, together with a transmission repair expert, found out which of the automatic transmissions are the most reliable, and which ones can cause unnecessary trouble.

Why do machines fail?

“You can understand that an automatic transmission is failing based on several signs,” says Nikolai Byshov, director of the Akpp03. Emergency automatic transmission help. "- Regardless of the type of transmission, the driver will feel the incorrect behavior of the car: twitching, slipping, kicking, shifting shocks, unstable engine speeds, and so on. As a rule, all these symptoms appear when the engine warms up to operating temperature. About A problem is usually signaled by control lamps on the dashboard: this is either a malfunction of the electronics, or overheating of the box, or the automatic transmission enters the so-called emergency mode.

Transmissions have a certain service life, depending on the mileage. However, improper operation can accelerate the breakdown. Neither the variator, nor the "automatic", nor the "robot" like increased loads. If you decide to increase engine power, you need to be prepared for the fact that the automatic transmission will last much less: each box is designed for a certain mode.

Absolutely all "machines" are harmful slipping. This is not about a slippery road, but about the situation when the car is stuck in the mud and one or more wheels are spinning idly. Transmissions are designed in such a way that when heated, the oil is forced out of the differential and all the gears inside work without lubrication, metal chips are formed that clog the system, and ultimately the automatic transmission fails.

Fifth place: Jatco JF011E CVT

Cars with this transmission: Nissan Qashqai, X-Trail, Sentra, Teana, Renault Fluence, Mitsubishi Lancer, Outlander, Citroen C-Crosser, Peugeot 4007 and others.

The most common variator on the Russian market is the production of the Japanese company Jatco with the code name JF011E. We will not go into detail about the principle of operation of this stepless automatic transmission, we will only say that the main elements here are two cones connected by an elastic belt. During movement, the stepper motor brings the cones closer or further apart, stretching the belt.

On the one hand, the transmission resource is impressive - without any repair, it runs up to 200 thousand kilometers. Jatco recommends replacing the belt after 140-160 thousand kilometers, but this service is expensive - about 60-70 thousand rubles, so the owners usually do nothing. Moreover, the belt is able to last longer, but on the second hundred thousand kilometers the box will most likely require major repairs.

Before the crisis, the new Jatco JF011E transmission cost about 120 thousand rubles. The owners preferred to change the entire assembly, because its repair was a little cheaper. Almost no one restored the variator, and even the manufacturer himself assured that it was not suitable for repair, so they simply did not produce the necessary spare parts.

After the fall of the ruble in 2014, the box went up to 300 thousand rubles. Interest in the restoration of the variator has grown sharply, however, apart from the belt, it is impossible to find any other new parts, alas. As a result, the services began to grind the destroyed cones, but, as a rule, the box repaired in this way breaks again after five or six thousand kilometers, and at the same time the expensive belt suffers.

Second a budget option- use used spare parts or buy a used box at a showdown, but here how lucky: the car can drive five thousand kilometers and stand up, or maybe fifty thousand kilometers. A high-quality repair of the Jatco JF011E variator, which will allow the transmission to last at least 100 thousand kilometers, costs about 140 thousand rubles, which, you see, is very expensive.

Fourth place: AKP4 DP0, DP2, DP8, AL4, AT8

Cars with this transmission: Renault Logan, Sandero, Duster, Kaptur, Nissan Almera, Peugeot 207, 307, Citroen C3, C-Elysee and others.

This four-stage "automatic" was ruined by modernization. According to Nikolai Byshov, cars produced before 2005 drove up to 200 thousand kilometers with this automatic transmission without any problems. However, later the solenoids were replaced in the transmission (now they operate at a different frequency), the design has been preserved, but the box serves half as much.

The first problem occurs with a run of only 25-30 thousand kilometers: the solenoid valves stop regulating the pressure. Most often, one valve fails, and the second, which is responsible for blocking the torque converter, changes at the same time - just in case. It is inexpensive - about 15 thousand rubles, but the trick is that new valves last only five to ten thousand kilometers, after which they need to be changed again.

The second transmission problem is the wear of bushings, Teflon rings and other mechanical parts, which happens closer to 100 thousand kilometers. A major overhaul will cost about 75 thousand rubles, but in some automatic transmission repair services they can charge up to 90 thousand for this.

Third place: DSG7 DQ200

Cars with this transmission: Volkswagen Polo sedan, Jetta, Passat, Skoda Rapid, Octavia and others.

The robotic transmission with two "dry" clutches of the Volkswagen AG concern is devoted to entire canvases on thematic forums, it is loved and hated at the same time, but the famous DSG7 is extremely unpretentious in repair.

The first breakdown in the DQ200 is possible with a run of 60 to 100 thousand kilometers: the hydraulic gearbox control unit usually fails, it is called the "mechatronic". However, the repair of the "brain" of the transmission is relatively inexpensive - about 45 thousand rubles.

The second common problem is replacing the clutch kit. Most often, it is changed with a run of just over 100 thousand kilometers, the price is about 50 thousand rubles, along with spare parts.

Second place: AKP6 A6GF1

Cars with such a transmission: Kia Rio, Soul, C "eed, Hyundai Solaris, Elantra and others.

The six-speed automatic transmission is Hyundai-Kia's own development. The Koreans made it not only for front-wheel drive models: A6LF1 / A6MF1 modifications are designed for cars with all-wheel drive, so even in the front-wheel drive version (A6GF1) it has a sufficient margin of safety.

The transmission is able to serve without any repair up to a run of 200 thousand kilometers. The first problem that is usually encountered is the breakdown of solenoids and contamination of the valve body (the cost of repairs is about 35 thousand rubles). The latter fails after 150-170 thousand kilometers, but the driver does not always notice a breakdown - there are practically no distinct kicks, bumps or shocks when switching. With a run of 200 thousand kilometers, mechanical damage occurs in the box, and only then a major overhaul is required, which is estimated at about 95 thousand rubles.

First place: AKP6 Aisin TF60-SN

Cars with such a transmission: Volkswagen Polo sedan, Skoda Rapid, Octavia and others.

Once this six-speed automatic transmission was considered one of the most advanced, but now it is installed mainly on budget models of Volkswagen AG. The expert considers this gearbox the most reliable among the above models.

The valve body is the first to fail, usually with a run of 80-120 thousand kilometers. Repair of the valve body costs 45-50 thousand rubles.

The next problem is caused by mechanical damage: the pistons inside the transmission lose their elasticity, the fluid overheats, as a result, due to insufficient pressure, the friction discs slip. However, this difficulty arises with high mileage - 180-240 thousand kilometers. A major overhaul will cost about 95 thousand rubles.