The transmission is one of the most important components of any car because it is what determines how the car will move throughout the gears. This explains why you may have to dig deeper into your pockets to fix a faulty one. Consumers must research well on the reliability of a vehicle’s transmission before settling for any car model. A good transmission should take you as far as 200,000 miles before it calls for a rebuild.

From Ford’s 4R75E to Renault’s AW55-50, this article will discuss a list of the least and most reliable transmissions of the 21st Century. This listing is based on customer reviews and may help you in decision-making before you acquire your dream ride.

Most Reliable Transmissions

Ford 4R75E Transmission

The 4R75E is a revised transmission of the 4R70W/E. It is used in cars such as Mercury Marauder, Ford Mustang, and Ford Expedition. Due to the many complaints from consumers on the reliability of its predecessor, the manufacturers of the 4R75E fitted it with two clutch packs to increase its durability and enhance performance.

Drivers of cars using this transmission should expect less delayed gear shifts thanks to the updated valve kit, clutch sleeve, plunger, bypass converter, and the new pressure regulator. Finally, the 4R75E has been tested for balance, leaks, and lockup, and meets the OE requirements. Scroll through reman-transmission.com for a list of all the vehicles equipped with the 4R75E transmission.

A245E Transmission

The A245E is used in most Toyota Corolla models. Consumers using car models with this transmission rated the cars as reliable and recommended. This 4 speed CVT transmission has the least maintenance cost. Under Special Operating conditions, you may only be required to change the CVT fluid after 50, 000 to 60, 000 miles.

PN3A Transmission

The transmission was featured in the 2015 Honda Pilot. It worked well because the model had some of the fewest transmission complaints. Apart from some drivers complaining of a few shatters and hesitations, the majority of consumers were okay with the PN3A. Averagely, owners of cars using this transmission encountered problems after 125, 000 miles. This is quite reliable compared to other transmissions that break down under 100, 000 miles.

SP5A Transmission

This Honda Fit transmission is one of the few transmissions that have received positive reviews from users. According to some car owners, the SP5A is durable and may last for up to 10 years without experiencing transmission failures. Of course, you may be required to do some maintenance but it won’t be as expensive as getting another transmission.

A750 Transmission

The A750 transmission is common in Toyota And Lexus SUVs. Among the models equipped with this transmission include Toyota Land Cruiser, which is reliable on extremely poor roads. The A750 requires less maintenance and may start experiencing problems after about 250,000 miles. The only drawback of these transmissions is the solenoids that may require regular replacement.

4F27E Transmission

It was manufactured by Mazda and Ford Engineers in 2000. Apart from its less appreciated 4-speed transmission, the 4F27E has the smoothest gear shift and the least fuel consumption, thanks to its improved RPM. Most important is that this transmission can go up to 300,000 miles before experiencing serious maintenance issues.

The Least Reliable Transmissions

TF-80 SC

Common in car models like Ford, Renault, Volvo, and Opel, this 6-speed transmission was designed to be light and modern at the same time. However, users have reported many issues like slipping of gears, faulty transmission filter, and malfunctioning solenoids. If you own any car with the TF-80C you may be required to visit your mechanic more often than always to make the transmission last longer.

JF011E Transmission

When used in friendly conditions, cars with this transmission don’t experience a lot of issues. However, the major con of the JF011E is its steel belt that wears faster than expected and could be too expensive to repair. You may be required to replace the belt after every 10,000 miles at a cost of not less than $2500.

AW55-50

This 5-speed transmission is common in Renault, Volvo, and Opel car models. Users have reported several jerking issues, especially when shifting from gear 2 to 3. This could be because of the unreliable solenoid valves and the valve body. The transmission also experiences frequent leakages.

JF506

Users of this transmission have reported several issues with its pistons, less durable solenoid valves, and faulty pressure regulator. These components cause jerking when changing gears. You may have to spend a lot of time and resources at your repair shop to fix the JF506 transmission issues.

DL501

This Audi transmission was designed for AWD vehicles. Earlier consumers have complained of mechatronic issues that affect the clutch package. Additionally, its shift fork sensors and oil pressure sensor are not durable and may be too costly to replace. Moreover, DL501 transmission rebuilt requires special services that may be hard to find.

LUK01J

Consumers of this CVT transmission reported jerking at low speed during gear shifts. This problem occurred after about 10, 000 km and was costly to fix.

42RLE

Chrysler Corporation produced the 42RLE transmission in 2003 as a modified version of the 42LE for the Jeep Liberty. It has since been used in the Chrysler 300, Dodge Charger, Dodge Dakota, Dodge Durango, and many more. It is widely known as having a history of failed torque converters around the 120,000-mile mark, so much so, Chrysler almost underwent a class-action lawsuit over it. Read more about Chrysler’s 42RLE transmission here.
 

Conclusion


Even though some vehicles’ transmissions might be more reliable than others, it is important to note that other factors such as proper maintenance play a bigger role in sustaining your car’s transmission for a longer time. In the end, always make sure that you follow proper maintenance protocols that your auto manufacturer recommends for your vehicle model, especially when it comes to your transmission.