Understanding CVTs: Pros, Cons, and What You Need to Know

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If you have been looking for a new car, you might have noticed that many newer vehicles come with a continuously variable automatic transmission (CVT). This type of transmission is becoming popular because it helps improve fuel efficiency.

Earlier, people considered CVTs as a strange option that made cars sound like they were always revving up. However, they are now widely accepted and are commonly found in many brands. Today, companies like Audi, Jeep, Nissan, Toyota and Ford, all offer CVTs in at least one of their models.

Continue reading the blog to learn about CVT transmission meaning, CVT transmission pros and cons, and more!

How does a CVT work?

You might have heard that traditional transmissions use different complex parts to shift through different gears. However, CVTs mostly operate with a simple pulley system. This system consists of cones at each pulley, which are connected by a chain belt. The cones can move to change the diameter of the belt, which adjusts the gear ratios and allows for quick shifts that improve power and fuel efficiency.

While one pulley in the CVT connects to the engine, the other sends power to the wheels. The size of these pulleys changes depending on the power needed. By this, we mean that when one gets larger, the other gets smaller. This design allows for smooth and strong acceleration.

One thing to remember here is that even though continuously variable automatic transmissions do not have traditional gears, some of them can mimic gear changes. The belt and pulley system is set to move to specific points using a regular shift lever or paddle shifters on the steering wheel in these cases.

Benefits of CVTs

Better fuel efficiency

Cars with CVTs are known for their great fuel efficiency. This is especially important as fuel prices rise. Many hybrid and plug-in hybrid vehicles use CVTs to make the most of their fuel.

Smooth long-distance driving

CVTs use a belt-driven system that smoothly adjusts the engine’s power and the car’s movement. This creates a very smooth driving experience with no sudden jolts, which, in turn, makes long trips much more comfortable.

Adapts to driving conditions

CVTs can quickly adjust to different driving situations. Whether you are in city traffic or cruising on the highway, the continuously variable automatic transmission changes gear ratios in real time to keep the engine performing well.

Consistent power

Unlike traditional gearboxes that have fixed gears, CVTs can change to many different gear ratios. This means you can accelerate quickly without worrying about shifting gears, which is especially helpful when driving uphill or on highways.

Less wear and tear

Since CVTs do not have the sudden gear changes that traditional transmissions do, there is less wear and tear on the engine and transmission parts over time. The smooth adjustments help the engine last longer.

Fewer parts and lighter weight

CVTs make the shifting process easy, so they have fewer parts. This leads to lower maintenance costs and less chance of mechanical problems. Moreover, the lighter engine also helps improve fuel efficiency.

Cons of CVT

Expensive maintenance

CVTs need special oil that cannot be mixed with regular transmission fluids. Oil mainly helps with lubrication in regular transmissions. However, in CTVs, it also keeps parts secure and prevents slippage. This unique oil requirement often makes maintenance more expensive compared to traditional transmissions.

Lack of gear fuel

Some drivers enjoy feeling the gear shifts in traditional cars, which CVTs do not provide. The smooth transition between gear ratios can make it feel less connected to the driving experience.

Problems at high RPMs

Although CVTs can adjust to different gear ratios, they need careful monitoring at high RPMs to avoid problems. That is because, sometimes, continuously variable automatic transmission might mistakenly read the input and cause the engine to rev too high. This can eventually affect performance. Therefore, it requires attentive driving at high speeds.

Strange acceleration sound

People driving cars with CVTs might notice a unique sound when accelerating. It is often called the “rubber band effect,” and it happens because the belts in the CVT are constantly moving. Although it does not affect how power is delivered, it creates a different sound during acceleration than other types of transmissions.

Expensive repairs

CVTs are more likely to fail than regular transmissions. The reason? They usually work well up to about 80,000 to 90,000 kilometers, and the belts start to wear out after that. This is the reason why manufacturers often choose to replace the entire transmission. It ultimately leads to expensive repairs.

Heat sensitivity

Continuously variable automatic transmissions can be sensitive to heat. It means driving continuously in tough conditions, such as towing or going uphill, can cause them to overheat.

Final thoughts

Now that you know the advantages and disadvantages of Continuous Variable Transmission (CVT), you can confidently make a decision when buying a car. But since buying a car is a big investment, it is important to do your research thoroughly.

If you are fine with CVT technology, you can look at cars that use it. Lastly, do not forget to check The Car Spec for more detailed information on cars and their specifications!

Frequently Asked Questions (FAQs)

Q1- Which cars have CVTs?

Ans. Many car makers offer models with Continuously Variable Transmission (CVTs). Brands like Hyundai, Subaru, Toyota, Honda, Nissan, Lexus and Chevrolet either currently make or have made cars with CVTs. Honda Civic, Subaru Crosstrek, Kia Forte and Toyota Corolla are some popular models that use CVTs.

Q2- Is a continuous variable transmission good?

Ans. CVTs are valuable not just for their fuel efficiency but also for their simple design. They have fewer parts compared to traditional automatic transmission (which can have many complex moving pieces). The simple design of a typical CVT includes a hydraulic driving pulley, some microprocessors and sensors, a strong belt and a torque sensing pulley.

This design gives CVTs many advantages over regular automatic transmissions. For example, they can enhance fuel economy, provide smooth acceleration, adapt to varying road conditions, and lower manufacturing costs. It results in a smoother ride overall.

Q3- Why do automakers use CVTs?

Ans. Although continuous variable transmissions have been around for a while, they are becoming popular now. That is because car manufacturers have realized that CVTs work well for their main customers. A CVT makes acceleration faster and more responsive by helping smaller engines deliver more power. It ultimately gives drivers a better overall experience.