IVT Vs. CVT – The Differences explained in detail

Last Updated on May 10, 2022 by MABER SAL

IVT and CVT are transmission systems that enable the gear ratio between the engine and drive wheels to adjust the vehicle’s speed. CVT stands for continuously variable transmission, while IVT stands for intelligent variable transmission. 

CVT works by changing through an unending range of gear ratios while driving, offering drivers unrivaled flexibility that maintains constant angular velocity regardless of the output speed. IVT works the same way as CVT, but it can imitate the shift pattern of a manual transmission, making it feel more responsive.

If you are new to the automotive space, all these terms can be confusing for you, and that’s where we come in. This article takes you through an in-depth comparison of CVT and IVT. It includes a history of CVT and IVT, how both work, the pros and cons of both transmission types, and some common questions. Please read on and be enlightened! 

History of CVT

Currently, almost every automaker has at least one model with CVT because of how popular the transmission is. This transmission type had existed since 1490, when Leonardo DaVinci designed the first CVT; Benz and Daimler later patented it in 1886.

The continuously variable transmission became known in 1910 when Zenit motorcycles built one that was so efficient that it got banned from Hill-climbing competitions. Subaru brought CVT to the mainstream in the late 1980s, and it has been popular to date.

History of IVT

IVT was designed by Hyundai Motor group under Hyundai Transys. This technology uses the high-efficiency CVT as its foundation and improves it by amending responsiveness and gear-shifting feel.

With IVT, there’s a solution for conventional CVT belts and pulleys that slip against each other. The IVT technology is an advanced automatic transmission that keeps the engine in the optimum power band, delivering good performance and enhanced fuel economy.

Difference between how CVT works Vs. IVT

Difference between how CVT works Vs. IVT

Before we get to the differences, let’s first understand how they work; keep in mind that both are automatic transmissions.

How does CVT work?

Unlike conventional transmissions that use various intricate parts to switch between gears, most CVT systems work through a pulley system with cones connected via a chain belt. These cones move to increase or decrease the belt diameter, thus changing gear ratios. This allows for a quick-shifting into the required ratio to boost fuel economy and increase power.

On the CVT, one pulley is connected to the engine, and the other directs power to the wheels. The width of the pulleys varies depending on the needed power; as one gets smaller, the other gets larger. CVTs are popular now because they give the most power out of a small engine, thus making acceleration quicker and more responsive, making the driving experience better.

How does IVT work?

The Intelligent Variable transmission works similarly to a CVT by performing continuous shifts that provide superior efficiency over automatic transmissions. IVT modifies the pressure of the pulley system in the transmission based on the driving conditions and driver input.

The pulley system in the IVT has a wide ratio that correlates to a broader operation ratio than other similar transmission systems. This wide ratio improves performance at low gear ratios and increased fuel efficiency at higher gear ratios.

IVT also uses a shift control strategy technology that lines up driver input, vehicle acceleration, and behavior. This makes the transmission more responsive, thus delivering a better driving experience.

Difference between CVT and IVT

Changes gear ratios by increasing and decreasing the diameter of the chain belt Changes gear ratios by modifying the pressure of the pulley system in the transmission
Keeps the engine RPM fixed as the vehicle speed increasesReplicates a manual transmission shifting pattern while considering the driving conditions and drivers intention 
Has preset gear speedsGenerates virtual gear speeds as needed
Has smooth driving, but drivers can feel gears shiftingOffers a smooth driving experience
Some CVTs utilize a push beltIVT utilizes a chain belt 

Pros and Cons of CVT and IVT transmissions

Pros and Cons of CVT and IVT transmissions

Both CVT and IVT have a wide range of benefits for drivers, but each also has some disadvantages. Let’s look at the good, bad, and ugly of either transmission to help you make an informed decision.

Pros of CVT Transmission

  • CVTs have been proven to improve fuel efficiency significantly. This transmission type is used in gas and hybrid models to give better mpg.
  • According to Certified Transmission repair, it is easier to drive uphill with a CVT because it finds the needed gear ratio immediately, thus allowing the engine to provide power without hard shifting.
  • CVT allows drivers to enjoy smooth driving and acceleration regardless of the speed because there aren’t any hard gear shifts

Cons of the CVT transmission 

  • CVT systems are more costly than conventional transmission systems
  • CVT systems don’t last as long as other transmissions; most fail at around 100,000 miles
  • They aren’t designed to handle the increased horsepower and other high-performance situations

Pros of IVT transmissions 

  • IVTs improve performance and increases fuel efficiency
  • It feels more responsive since it recreates a manual transmissions shift pattern
  • It uses a chain belt instead of the conventional metallic belt, preventing slippage while improving efficiency.
  • It has a longer lifespan and doesn’t require maintenance making it more reliable 
  • Reduces engine power loss and improves fuel economy

Cons of IVT transmissions 

  • The short lifespan of 100,000 miles or less
  • The initial cost of IVT is significantly higher.

Frequently asked questions 

Is IVT better than CVT?

IVT is an improvement on how the CVT works, so it is safe to say that it is better and more advanced. However, each transmission type has unique advantages and a fair share of problems. IVT is also more costly compared to CVT

Is IVT transmission automatic or manual

IVT transmission is automatic, but it mimics a manual transmission shifting pattern to give a smooth driving experience. IVT changes gear ratios faster than the standard automatic transmission, thus allowing power to get to the wheels faster.

Are IVT transmissions reliable?

Yes, IVT transmissions have proven to be more reliable than manual and regular CVT transmissions, which is why most automakers embrace this technology. Since IVTs offer unlimited gear ratios and speed, they also offer better performance.

What are the common problems with IVT transmission?

  • Unresponsiveness 
  • Burning smell that is mostly caused by overheating
  • Loud and unusual noises
  • Hesitation and Jerking

What should you look out for when buying a used car with a CVT transmission?

CVTs are costly, and therefore, you need to conduct thorough research before buying a used car with this transmission. Ensure you check its warranty, take a test drive, and conduct an inspection.

These are some of the things you should look out for, especially during the test drive:

  • Strange and loud whining and humming sounds: CVTs are generally louder than other transmissions, but they shouldn’t produce loud and unusual sounds. If you notice excessive sounds such as whining and humming when accelerating, the CVT could be faulty, and that’s a huge red flag right there
  • Slow shifting: for a CVT, you only have to shift between drive, reverse and park. If it takes over 2 seconds for the transmission to shift, this could indicate that the CVT is faulty and should be changed soon.
  • If you notice the acceleration is slipping or it loses power momentarily, the CVT is faulty
  • Inconsistent RPM while driving at a steady speed is also another indicator that the CVT could be faulty
  • Dirty transmission fluid could also indicate CVT issues and other problems.
  • Shifting that jerks the vehicle is also a red flag

IVT vs. CVT: final word

Both IVT and CVT transmissions are designed to give the driver a better driving experience while boosting performance and fuel efficiency. These types of transmission offer better performance, especially for small engines. The transmissions come with high prices for purchasing and repair costs, so ensure a warranty covers them. Overall, both transmissions are reliable, and they give a better driving experience than traditional automatic transmissions.

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