What is a CVT Transmission?How It Works – Pros and Cons
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.
If you’d like to know what type of transmission a car has before buying it, it’s easy to do for new vehicles, as this is usually printed on the window sticker, but you can also find it on the manufacturer’s website or printed brochure. If you’re buying a used car, then further research may be required, but typing the make, model and year in a search browser should do the trick.
CVT Transmission Problems
But before actually buying a car with this type of transmission, you might want to look into the CVT transmission reliability. Is this the best kind of transmission for your next vehicle? Certainly, there are some advantages:
This kind tends to get slightly better gas mileage, especially in city driving. Fuel efficiency is a great advantage of CVTs because they can adjust gear ratios instantaneously. They also have an infinite range. Estimates place an average sedan with CVT transmission at 38 miles per gallon. You’ll also find this type of transmission in most hybrids.
The power delivered is simple and straightforward.
The ride itself tends to be smooth; you never feel the gears shifting, because, well, they don’t!
But there are also drawbacks, the most common complaint of some drivers being that a continuous variable transmission doesn’t allow for quite as much speed. Also, some drivers prefer the escalating gear shifts to the steady hum of this new technology. Other CVT transmission problems include:
Sudden loss of acceleration
Slipping, jerking & shuddering
Excessive wear and stretching of the belt
Cost of repair and maintenance
Ultimately, it’s up to you—but we do recommend that you drive a CVT transmission before you purchase one!
A: CVT transmission has its pros and cons, but the choice ultimately depends on you. A continuously variable transmission has better fuel consumption and produces fewer emissions, as well as delivering a smoother ride. However, a standard automatic transmission is better for speed and control.
Q: How long will a CVT transmission last?
A: If you take good care of your CVT, this type of transmission can last more than five years. Its improved performance is also due to the fact that it’s still sort of new technology, therefore car manufacturers have been working to improve it.
Q: How do you know if your CVT transmission is bad?
A: There are several warning signs of CVT transmission problems, such as oil leak marks on your parking spot, vibration, burning smell, transmission slips or delayed drive.