There’s a concern about the longevity of these transmissions due to some past issues in some models of Jeep and Nissan. So, how long do CVT transmissions last?
A CVT (continuously variable transmission) is a single-speed transmission that works like an automatic shifter for seamless shifting through a range of gear ratios, unlike other mechanical shifters that offer access to a fixed number of gear ratios.
How Long Do CVT Transmissions Last?
In a late-model vehicle, you can expect the CVT to last around 75,000 to 100,000 miles. However, the older CVTs – especially some of the first designs – might not be as reliable. CVT transmissions have no set lifespan, and there are several factors that determine the average lifespan.
These affordable transmissions have become more reliable over the years as the design has been tweaked and perfected.
With automakers investing more money into CVT technology, we expect the lifespan to continue to grow over the next few years. By following any maintenance recommendations in the owner’s manual, you can help the CVT last longer.
What is a CVT Transmission?
A continuously variable transmission (CVT) is an automated transmission that can change through a continuous range of gear ratios, typically resulting in better fuel economy in gasoline applications.
This contrasts with other transmissions that provide a limited number of gear ratios in fixed steps. The flexibility of a CVT with suitable control may allow the engine to operate at a constant angular velocity while the vehicle moves at varying speeds.
Thus, CVT has a simpler structure, longer internal component lifespan in theory, and potentially greater durability. Compared to traditional automatic transmissions, it offers lower fuel consumption and is more environmentally friendly.
CVTs are used in cars, tractors, side-by-sides, motor scooters, snowmobiles, bicycles, and heavy equipment. The most common type of CVT uses two pulleys connected by a belt or chain; however, several other designs have also been used at times.
How Does a CVT Work?
A CVT gearbox has a straightforward arrangement of two conical pulleys, with a V-shaped drive belt connecting them. One of the pulleys is connected to the engine, with the other connected to the wheels.
When you press the accelerator, the engine turns over faster, and the connected cone moves accordingly. The other cone adjusts to how the engine cone is responding to the amount of engine power, the drive belt maintaining the same tension. This determines how the car accelerates.
As the two cones move independently, there are no set gear ratios, essentially making a CVT a single-speed unit with an infinite number of gear ratios available. Its operation also explains why cars fitted with a CVT have a high-revving character, because the engine revs aren’t directly related to wheel speed.
The latest CVT-equipped cars have lots of soundproofing to ensure improved refinement, and the technology has progressed so that the modern CVT gearbox is better than it used to be, both in terms of driving enjoyment and efficiency.
Indeed, Nissan has developed a CVT gearbox called Xtronic, which features a number of ‘steps’ in its power delivery, which is designed to make it feel more like a conventional gearbox by ‘shifting’ through the gears.
Elsewhere, Toyota’s Hybrid Synergy Drive (HSD), which is used in hybrid models such as the Prius, uses a form of CVT gearbox as part of the hybrid system. This has a split power delivery so that the car’s engine is either driving the wheels or sending power to the battery.
Are CVT Transmissions Reliable?
CVT transmissions are generally quite reliable, but it depends on the car model and the type of transmission. Modern CVT transmissions have become quite reliable, but older models had some problems. Even so, classic automatic transmissions are usually more reliable than CVTs.
1. Toyota.
If you’re looking for a reliable CVT transmission, it’s advisable to consider the Toyota brand. After all, the company is regularly considered one of the most reliable, mainly because it doesn’t use new technology without thoroughly testing it.
Toyota is known for manufacturing one of the best CVT transmissions on the market. In fact, some Prius models have lasted over 300,000 miles.
2. Honda.
Honda is another car manufacturer considered reliable. That said, sometimes the manufacturer rushes things and uses new technology that has some flaws.
However, if you were to buy a tenth-generation Civic equipped with a CVT transmission and a 1.8-liter turbo engine, you would find excellent acceleration and reliability. In fact, these models are considered among the best on the market.
3. Subaru.
The CVT transmission installed in Subaru vehicles is designed to improve fuel efficiency, and it succeeds. However, Subaru owners like to drive off-road and go on adventures, but the CVT transmission might not be suitable for that type of driving.
CVT transmissions don’t handle as much torque as manual or conventional automatic transmissions. It will overheat if pushed too hard, leading to reliability problems.
4. Mitsubishi.
People opt for the Mitsubishi range because of its low price. If you need an economical vehicle, Mitsubishi will be at the top of your list.
That said, you also get what you pay for. The CVT transmissions in this range are not built like those of other brands and probably won’t last as long. It’s recommended to do your research and know what you’re getting into before buying a Mitsubishi.
5. Nissan.
Before using the CVT transmission, Nissan had an excellent reputation. However, older CVT models left much to be desired. In fact, many of the early CVT transmissions tended to fail at 80,000 miles.
Over time, Nissan has improved the reliability of its CVT transmission design. Even so, it might be wise to wait a little longer for it to reach perfection.
