2020 Subaru Ascent: transmission slipping

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 Feb 19, 2025 · Transmission · OR

Ever since our car went in for re-programing CVT drive chain it progressively has been having a problem of something slipping in drive and in cruise control. feels like a loss of power and a feeling chatter from transmission. Now when you put it in drive it makes a jerking noise. the thing is that we never had this problem until it went in for this recall. it's been back twice and they claim they can't find any problem but continues to get worse. it happens every time we drive it . just returned a 700 mile trip and it's very annoying. Also we do have an extended warranty.

Filed Mar 27, 2024 · Transmission · 25,000 miles · CA

The contact owns a 2020 Subaru Ascent. The contact stated while driving 30 MPH, the transmission was slipping, and there was a loud sound coming from the vehicle. The contact stated that the vehicle lost motive power while accelerating. The contact was unsure if any warning lights were illuminated. The contact pulled over and left the vehicle for several hours. Upon return to the vehicle, the contact stated that the vehicle drove normally. The vehicle was taken to the dealer and an unknown module was reprogrammed; however, the failure recurred several times. The vehicle was taken back to the dealer and a diagnostic test was performed; however, the dealer was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was made aware of the failure and stated that if the failure could not be duplicated the vehicle could not be repaired. The approximate failure mileage was 25,000.

Filed Dec 6, 2023 · Transmission · NC

CVT transmission skips in high gear and shudders randomly while driving down the road. Randy Marion in Hickory NC is where we purchased and replaced the rear transfer clutch and insists the problem has been corrected. It is not. Our regular mechanic and Moderna Subaru of Boone NC both agree the transmission is bad. It has been sitting at the dealership for 2 months while all parties argue over who is responsible for repair. (Original selling dealership, Subaru of America, 3rd party warranty) meanwhile I have no car but am expected to make payments. There are no warning lights or indicatator lamps to show an issue which is even more scary. I do not feel safe driving the vehicle without repair as the stutter and slipping between gears can cause hesitation that could cause an accident or worse. We did not test drive the vehicle at high gear and that was our mistake, but I drove it on a trip 2 days after purchasing and it had transmission issues the entire time. Dropped back off at dealership Monday morning and have been dealing with headaches since then.

Filed Nov 23, 2022 · Engine, Transmission · CA

Transmission still slipping when accelerating between 20-30mph. Brought car in for recall but it continues to have the same issue. AC stopped working even when leak was fixed. Now smells like exhaust fumes when warming up the car.

Filed Sep 11, 2022 · Engine · VA

Since purchasing our 2020 Subaru Ascent, the transmission slips, resulting in a lengthy wait time until it revs to the next gear, and then there is a palpable "jolt" as the transmission appears to move into the next gear. In addition, when I press the gas pedal to accelerate, there is a definite hesitation before the car actually accelerates. Previously, we had brought the car in to the Subaru dealership for service regarding this issue, but Subaru indicated that there has not been a problem and they did not open the transmission to look at it. We are also concerned about transmission-related problems given the recent recall of the 2020 Subaru Ascent. We know this has a CVT transmission but in this case we know that this problem is not normal. (We have family members and friends with CVT transmissions.) We are bringing the 2020 Subaru Ascent in again this week, pointedly indicating these concerns with the transmission. Please advise.

Filed Jul 19, 2022 · Transmission · DC

2020 subaru ascent. Consumer writes in regard to transmission failure. The consumer stated the manufacturer has exceeded a reasonable amount of time determining a fix for the transmission drive slip train. The vehicle has experienced the failure. The consumer stated that a neighbor said the mechanic informed him, "the transmission for subaru accent was defectively designed for this car and under sized causing it to not shift properly."

Filed Jun 6, 2022 · Brakes, Transmission · IL

The contact owns a 2020 Subaru Ascent. The contact stated that while driving, the vehicle was shaking and the transmission was slipping. There was an abnormal squeaking noise detected from the brakes. There were no warning lights illuminated. The vehicle was taken to the local dealer where the brakes were replaced but, however, the mechanic was unable to duplicate the other failures. The vehicle was not repaired. The manufacturer was made aware of the failure but no additional assistance was provided. The failure mileage was unknown.

Filed Apr 26, 2022 · Electrical, Transmission · FL

Something in car drains battery frequently not while the vehicle is running but after it’s been off for a few hours when no lights have been left on, Subaru dealership refuses to admit there’s a problem. This leaves me exposed to being stuck in unsafe situations with a dead battery. No warnings ever come on to alert me the battery is draining. Transmission frequently slips and stutters when accelerating to higher speeds like when trying to transition onto the interstate. Subaru also denies this problem. They fixed the transmission clutch but that did not help.

Filed Dec 6, 2020 · Transmission · 28,000 miles · MD

Cvt began slipping intermittently around 28000 miles. This usually occurs in the 55-65 MPH range at 2000-3000 RPM. Slipping is indicated by approximately 300 RPM change and a noticable hesitation in vehicle motion.

Filed Nov 19, 2020 · Transmission · 12,000 miles · MN

The transmission occasionally slips, resulting in a momentary rise in engine revs and a slight lurch. I assume that this is related to the known transmission issue for earlier ascents, but mine is not included in the affected VIN number group. Other people traveling in the vehicle with me have noticed the issue and remarked on it, so I am not imagining it! Subaru have not yet diagnosed it but will do so at the next oil change. This behavior has been a feature of the vehicle from new and it has now done about 12,000 miles. The event occurs maybe once a week or so.