If you’re shopping for a new vehicle, you may come across the term CVT Transmission. What does this term mean? And more pointedly, is it something you should buy – or something you should avoid?
What is CVT?
CVT stands for continuously variable transmission, which is different from a conventional automatic transmission. The standard automatic features a complex series of gears that transmit the power of the engine to the wheels. The CVT, on the other hand, doesn’t have any gears. It features a pair of pulleys of variable width, connected by a belt. One pulley is connected to the engine, the other to the wheels. Because their width is variable, it changes depending on how much power the car needs, hence the term “continuously variable transmission”.
The CVT also works a little differently from a conventional transmission. To a certain extent, you do operate it more or less normally—sliding the shift lever from Park into Drive, then zooming off! From there, though, the CVT gets a little bit more complex.
You see, with ordinary automatics, there are a set number of gears—so, for instance, you may see a vehicle marked as a “6-speed automatic.” Each of these gears accommodates a certain speed range, so as you start driving faster, the car may automatically shift from first gear into second, and maybe then on to the third.
With a continuously variable transmission, though, you do not have all these gears. Actually, you just have one. Unlike the individual gears in an ordinary automatic, this gear can handle all speeds. That’s why they call it variable.
CVT Transmission vs. Automatic
There are several differences between the automatic and continuously variable transmission, apart from the basic functionality of each. Some are more obvious than others. For instance, when you’re driving a vehicle with CVT, you won’t notice or “feel” gears shifting. You’ll just notice the car getting faster or slower. In that sense, it might make for a smoother ride. The unusual thing is that it essentially chooses the ideal speed for any given situation and holds it constant—even if you’re accelerating the car.
Say, for instance, you try to speed up to pass another car. When you slam on the gas, the car will immediately zoom to a nice, brisk speed – but then, it will hold steady at that speed, even as you continue to apply pressure to the gas pedal. So that feeling you get in an ordinary automatic, where you climb through the gears, just isn’t there.
Another difference you may notice, when driving a vehicle like this, is an easier take off. Since there are no gears in a CVT transmission, your vehicle will find it easier to get to the ideal torque ratio and maintain it. This means it will almost effortless for the car to take off from a stoplight, as well as easier to climb even on difficult terrain.
Needless to say, driving a vehicle like this is a unique experience, and it’s becoming more and more popular with some auto manufacturers. Many automakers use CVTs because it can get maximum power out of a small engine, therefore delivering a quicker, more reactive acceleration. This is also the reason why vehicles with four-cylinder engines are often the ones with CVTs.
Cars with continuously variable transmission
Because cars with a continuously variable transmission and ones equipped with a standard automatic look the same, you may not be able to tell the difference when car shopping. But here are the car makes and models that most often use CVT transmissions:
- Mitsubishi, Nissan & Subaru – these car manufacturers often use continuously variable transmission not just for their regular models, but also for their SUVs.
- Honda & Toyota – with over a dozen models that feature a CVT transmission, these two Japanese automakers are also on the rise.
- European manufacturers – although CVTs are more common among Japanese brands. Some European car manufacturers also started adopting it for a few of their models, including Mercedes-Benz A-Class and B-Class, as well as Renault Koleos and Megane.