Subaru Ascent slipping problems

Filed Oct 7, 2026 · Transmission · VA

Cvt is slipping and failing internally, CVT assembly requires replacement.

Filed Aug 28, 2026 · Transmission · WY

My local Subaru dealership / service provider has told me my car needs a new transmission at 66k miles, due to an issue within the CVT solenoid causing slipping and lag that will eventually lead to catastrophic failure of the transmission - per the Subaru of America service tree. This issue began on July 23, 2026, when a slew of warning lights illuminated on the dash and my car went into limp mode, not accelerating properly. It eventually began driving normally and all dash warning lights dissipated. Dealership couldn't see the car at that time, then I was out of town for about a week. Came back, experienced the same issues within 2 days of driving the car. I was able to get it into the dealership for service on 8/6 where it was diagnosed, according to the Subaru Service Tree, as needing a new transmission. Subaru technicians cleared the codes, and I took the car home on 8/7/26 with the warning from my dealership that it was only a matter of time before the transmission failed. The lights / limp mode driving came on again on 8/9 and I have not driven it since that date. I have opened a case with SoA and am waiting on a "resolution". I do not feel safe driving my vehicle so it has been sitting in the driveway since 8/9 while I wait on a resolution from Subaru of America.

Filed Jul 31, 2026 · Transmission · GA

The vehicle exhibited transmission slippage but did not provide any warning lights or other symptoms . About 100 miles later, the Automatic Transmission Oil light came on (flashing YELLOW), and all other systems light up (both Yellow and Red) disabling front collision, auto vehicle hold, RAB, etc. Pulled to a safe location and left in park for 10-15 minutes per guidance. Had towed to dealer to determine issue, transmission failure on a 3.5 yr old vehicle with 80,019 miles.

Filed Jul 29, 2026 · Transmission · FL

The Transmission is slipping on my 2020 Ascent. I had the recall wrk-21 performed in July of 2025. Over the last 6 months the car has been hesitant to go at low speeds and shakes at high speeds. Over the last month the transmission started to slip while accelerating , especially up hill. There would be a grinding noise and RPMs would jump. I took it to the dealer and they confirmed it was the transmission via camera test. I called Subaru of America for goodwill help with the cost knowing that there is a know issue with the transmission. They refused due to the mileage, 121,010. •What component or system failed or malfunctioned, and is it available for inspection upon request? The transmission is slipping •How was your safety or the safety of others put at risk? The car is hesitant to go from a starting position. The car will jerk back and forth when trying accelerate when merging or crossing a road. I am also very concerned of catastrophic failure at high speeds. •Has the problem been reproduced or confirmed by a dealer or independent service center? The dealer has confirmed the transmission is bad via camera teat. •Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Just the dealership •Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No dash lights just the feeling and sounds.

Filed Apr 7, 2026 · Transmission · NH

Issue 1: Complete transmission failure was diagnosed by Subaru dealer March 24, 2026 at 5 years and 6 months after purchase with an odometer reading of 45,000 miles (drive train warranty 5 yrs/60,000 miles). Had to purchase and have installed a rebuilt Subaru transmission. First noticed transmission was slipping with a large load in vehicle May 2025 at 4 years and 8 months after purchase at about 40,000 miles on odometer. The issue was subsequently not noticed under typical load until slipping transmission signs reappeared December 2025. Made appointment in March 2026 due to a planned trip to [XXX] mid-February to mid-March. Failed transmission poses critical safety risks including loss of acceleration, stalling in traffic and unexpected deceleration. Subaru of New England was able to install the transmission at about 50% of the initial estimate over $12,000 (final paid $5400). Subaru of America file was claimed (Case # XXX-XXX) for the balance, but any further reimbursement was rejected. Issue 2: Driver window alternating between getting stuck fully opened as well as reversing to the open position when trying to roll up. The failure of window regulator and channel run was diagnosed by Subaru dealer March 24, 2026 at 5 years and 6 months after purchase with an odometer reading of 45,000 miles. Had to purchase and replace the Subaru window regulator and channel run. Power window failures in the open position create significant safety risks including vehicle theft, interior damage from weather and occupant vulnerability. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 13, 2026 · Electrical, Engine · CO

The transmission on our 2021 Subaru Ascent is slipping and failing to accelerate, RPMs reving, and every issue indicator notification light is on. We took the car to our mechanic, then to the Subaru dealership service dept for diagnosis. A full transmission replacement is required plus associated repairs for a cost of $14,543.98. Service estimate attached. This repair is more than 2/3 of the value of the vehicle. This make/model and transmission type have documented problems and Subaru has previously issued an extended warranty on other model years for this same transmission issue. We are trying to communicate with the Subaru customer service but have had limited response due to the holidays and have not had a resolution yet in the past month.

Filed Dec 2, 2025 · Transmission · FL

Over the past few months the transmission has started randomly refusing to engage. When entering the expressway, you will press the accelerator, and the engine will rev and the vehicle will not accelerate at all. Then you let off the accelerator, let the engine RPM drop back down to idle, and press again and it will accelerate. This has happened 3 times in 2 months. Subaru is refusing to replace the transmission because their tech cannot personally reproduce the problem on demand, even though they have voluntarily extended the warranty on this model transmission due to slippage issues. They are instead going to change the transmission fluid, which has less than 1/2 the mileage for a typical fluid service, to mask the issue, risking the safety of passengers.

Filed Jul 21, 2025 · Transmission · 75,000 miles · TN

The contact owns a 2021 Subaru Ascent. The contact stated while driving 65 MPH and attempting to accelerate, the vehicle inadvertently lost motive and failed to accelerate at intended. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission, and informed the contact that the transmission was slipping. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 75,000. The VIN was not available.

Filed May 16, 2025 · Transmission · TX

I purchased the car brand new in 2019. Shortly after purchasing, the transmission started having hesitation and slipping. I took the car back to the Subaru, and they replaced the transmission under warranty. Unfortunately, they replaced it with another full transmission, and very shortly there after, they had to replace it again. Unfortunately, they replaced it with another faulty transmission and now it is at 150,000 miles and needs another transmission. No one offered me to buy back my car with a second transmission replacement. I was told I was trying to scam a new transmission from Subaru. For this third transmission, I had it verified by an independent shop. I have placed a complaint with Subaru and ask them to buy back my vehicle and I have been told it’s unlikely to happen. I am worried about what will happen when the transmission goes out while I’m driving 70 miles an hour down the highway. This is a pattern in the warrants consumer protection. Many other car companies have stopped. Trying to make this CVT because it kept having problems..

Filed Mar 30, 2025 · Transmission · VA

When trying to maintain highway speeds (65 to 70 MPH) and driving in mountainous terrain of Pennsylvania, Maryland, or New York, the vehicle will shudder as if it is loosing power. The vehicle will rapidly loose speed. No warning code is issued. The only way to solve issue is depress the pedal to increase the RPMs. Took vehicle to dealer and reported that it felt as if the CVT chain was slipping. They said they could not recreate and there was no code.