Continuously Variable Transmission (CVT) was first made available in the 5th generation Legacy and Outback. Critics praised its design and Subaru’s own engineers claimed it would require no maintenance for the life of the vehicle. Yeah, about that …
Once the CVT started to fall out of its standard warranty, owners were met with increased hesitations, jarring shudders, and even the occasional stalls. Enough complaints were made that Subaru eventually agreed to extend the CVT warranty for 1.5 million vehicles. More on that in a bit.
Design uses two hydraulically operated pulleys connected by a metal chain. The metal was a nice touch because not only is it generally stronger, but it’s also believed to reduce the annoying noise associated with CVTs called
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Subaru engineers made the bold claim that the CVT was “maintenance free” as pointed out in this 2009 article on The Car Connection:
“The new CVT, which was designed completely in-house in Japan, requires no maintenance whatsoever for the life of the vehicle, say powertrain engineers.”
And while the engine is idling, some owners report the CVT knocks and jerks with so much force that they look back to make sure they weren’t just rear-ended.
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The automaker was quick to point out, however, this doesn’t admit a safety defect. It’s likely that a spike in out-of-warranty claims and online complaints helped drive this change, as well as the potential of future litigation if Subaru didn’t act soon.
The extension bumps coverage for the CVT up to 10 years/100, 000 mile. However, it does not apply to salvaged or rebuilt CVTs. And, in order to qualify owners **must have their transmissions inspected or repaired before July 31, 2018**.
Experienced engine hesitation after a near stop, not a complete stop, but a near stop. At least 5 times I have had very near accidents since the engine will not respond for at least 3 seconds. Especially dangerous when entering traffic trying to make a left turn entry.
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Maybe you've experienced this problem. Maybe you're concerned you will soon. Whatever the reason, here's a handful of things you can do to make sure it gets the attention it deserves.Everyone knows about Subaru’s world-renowned symmetrical all-wheel drive and boxer engines. Along with Subaru’s safety, they’re the stars of the company’s advertisements. Subaru also has a third drivetrain technology that has proliferated throughout its lineup and goes hand in hand with its engine and AWD: Lineartronic CVT.
CVT is short for continuously variable transmission. Rather than using gears as in traditional automatic transmissions, Subaru’s CVT uses two fluctuating hydraulically actuated pulleys and a chain link. (Some other manufacturers use belts.) The chain link is connected to both the input shaft and the output shaft, and as the pulleys change, so do the drive ratios. Without set gear steps, the device benefits the driver with a smoother driving experience and improved fuel efficiency.
Doing away with the more complicated design may suggest that CVTs are less problematic, but that is not the case. While it's by no means a poor design, it presents its own list of possible issues.
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’s informational team has been digging through forums, recalls, and consumer complaints to get a sense of what issues you need to be aware of when buying or driving a Subaru with a CVT. Let’s dive into our findings.
Whether or not Subaru's CVTs are reliable is something owners will debate all day long. While many feel it's a safety risk, countless people think they're rock solid. After all, Subaru couldn't be as popular as if it was selling bad products. However, throughout the past decade, hundreds of customers have complained to the National Highway Traffic Safety Administration (NHTSA) about several problems relating to Subaru's CVTs. Although Subaru doesn't correlate the two, the company announced warranty extensions for several 2010-'18 CVT-equipped Subarus from five years/60, 000 miles to 10 years/100, 000 miles. The extended vehicle warranties apply to the Crosstrek, Legacy, Outback, Forester, Impreza, and WRX.
If you notice these symptoms while driving your Subaru, the problem could be sourced to the CVT. Here are some of the most common Subaru CVT problems:
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A frustrated customer complained to the NHTSA with the note, “Transmission failure. It is a known issue with models with their original CVT transmission, but rather than issue a recall, they’re extending warranties and fixing as they break. This left me with no power on a state highway that had speed limits of 75 mph. … I was going about 70 mph in the center lane of a three-lane highway, when suddenly my car jerked and then wouldn’t accelerate.”
Another customer with a 2012 Legacy left a comment, "Wife was driving car with newborn son when she came to an abrupt stop because someone slammed on the brakes in front of her. So, she did, and the car stalled and stopped on her nearly avoiding being rear ended. On other occasions she would stop on a hill, and the car would shudder and come to a stop and die. This is a very dangerous safety concern for any of these vehicles equipped with this CVT transmission, especially when Subaru boasts about how this transmission is completely maintenance free for the life of the car. What a joke. Rectify the problem before somebody dies."
2012 Outback: “Vehicle shudders and stalls when braking hard. It will not stall on a gradual stop but will stall in any situation when stopping quickly. … Resulting stall means loss of power brakes and steering. Have to shift into park and restart the vehicle.”
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2016 Forester: "Broken transmission due to broken transmission belt at 43, 000 miles. I was stopped at a red light. When the light turned green, I took my foot off the brake and put my foot on the accelerator. Immediately, there was a huge bang, and my car rocked back and forth. I thought I had been rear ended, but there was nobody behind me. My car begin to roll backwards. I tried to get the car into drive by turning the car off and on and utilized other techniques, but I was not able to drive my car. I called for a tow truck and had my car towed to the local Naples Devoe Subaru dealer.
"Eight days later, they confirmed my suspicions. My car had a broken transmission at 43, 000 miles. This could've ended much differently had I been driving on the highway. I no longer believe my Subaru is a safe vehicle. Subaru has agreed to replace the transmission since the car is still under warranty. Unfortunately, they want to replace it with a remanufactured transmission rather than a new transmission, which carries a better warranty. Both Subaru of America and Devoe Subaru in Naples have been unresponsive, dismissive, disrespectful, and uninterested in fixing my car in a timely, professional manner. I will no longer own a Subaru. Thirty-plus years of owning cars with many of them exceeding 200, 000 miles, and never have I been in a car that carried the risk of killing me. If my transmission belt had broken while I was driving 75 miles an hour on the highway, I might not be here writing this report. Get it together, Subaru. Not feeling the love!"
2015 Outback: One owner of a 2015 Subaru Outback filed a complaint with the NHTSA saying, “Intermittently, the car does not respond when the accelerator is depressed. I am told by the dealership that this is a common problem with the CVT transmission. This is a major safety issue, as I have almost been hit on several occasions when turning left or merging into traffic. If the accelerator is depressed more and more, the car finally lurches forward and the brakes have to be slammed on.”
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2015 Crosstrek: "I was driving on the interstate going 75 mph, passing another vehicle, when the car rapidly lost speed and revved to 5500 rpm. The vehicle continued to lose speed and would not respond when I pressed down on the accelerator. I had to quickly pull to the left shoulder. Luckily, the car behind me was paying attention and was able to slow down and not hit us. I turned the car off, and luckily the vehicle did restart. My fuel light had just turned on minutes before this, but I still had 60 miles to go before empty. I was planning on exiting to refuel before this happened. I still do not know what caused this to occur. I left a message with the dealership, and I am awaiting a return phone call to have the vehicle assessed.”
Several complaints about fluid seeping out of the CVT housing resulted in Subaru issuing technical service bulletins related to CVT clamps and CVT seals. According to the investigation, the likely source of the seepage is the sealant used on the CVT’s oil pump chain cover and the input shaft oil seal.
2013 Crosstrek: "Slow starting when turning over from stop/park/cold/hot. Excessive oil use after each 3, 000 miles. No light warning for low oil displays. Engine bogs or almost stalls when giving gas. Usually when air conditioning
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