38 of the
1,331 complaints filed about the Subaru Ascent
are about the fuel system —
3% of everything owners reported.
The worst model year for it is 2019.
On May 14, 2026, while driving a 2021 Subaru Ascent (approx. 94,291 miles) on a Texas expressway at highway speed during rush hour, I experienced a sudden and significant loss of engine power. There were no warning lights, no safety system activation, and no advance indication of the failure. The vehicle decelerated abruptly with traffic behind it. Live OBD-II data was being logged during the drive and was provided to the service advisor at the authorized Subaru retailer. This incident occurred only 3 days and approximately 125 miles after the vehicle was returned following a major engine repair performed at an authorized Subaru retailer in Texas under active powertrain warranty. That repair was supervised by a Subaru of America District Quality Manager and Field Technical Specialist, who conducted a 110-mile validation drive prior to release. Prior to the highway failure, visible fluid leaks were documented across the intake ducting, residue on lower engine components, a sweet and burning odor after driving, and milky sludge returning to the coolant reservoir — all within 125 miles of pickup. These are consistent with ongoing oil and coolant cross-contamination, which was the original diagnosis documented in the dealership's digital service portal. The vehicle has now undergone three major engine teardowns since March 17, 2026 — over 100 days out of service — for the same underlying powertrain issue on the FA24 engine. The current repair involves cylinder heads sent to a third-party machine shop. Vehicle telematics confirm the vehicle has not been started since May 27, 2026. This report is filed to establish a federal safety record of the highway power loss incident and the recurring nature of this powertrain failure. An active Subaru of America customer advocacy case is on file regarding this vehicle.
NHTSA complaint #11746580 — an unverified report by a vehicle owner.
My 2020 Subaru Ascent struggles to retain power when accelerating, especially from stopping and especially when the fuel is low. The vehicle stalls or loses some power when trying to accelerate. The check engine light is not on and there is no other indication that there is a problem with the vehicle. I have discussed it thoroughly with my mechanic and we both think it sounds like a fuel pump issue. He looked at the other Subaru recalls and thinks my vehicle should be included in the other Subaru fuel pump recall (NHTSA ID Number: 21V587000). Does my vehicle qualify for this fuel pump recall? Thank you.
NHTSA complaint #11732360 — an unverified report by a vehicle owner.
In 2024, 2025, and 2026, I have had 2 incidents in each year where the cruise control is set to 60 to 65 mph and the cruise control then accelerates the car past 100 mph. When this occurs, tapping the break does NOT disengage the cruise control. All 6 times I have had to slam the breaks to a full dead stop while the car tries to accelerate anyway. April 4, 2026 and April 14, 2026 are the most recent occurrences and all occurrences so far for this issue have been during a downhill road incline. The dealer has dismissed the problem every time and has been unable to fix or reproduce the problem on demand. The random frequency of this problem can easily lead to a significant accident for the driver or others in the vicinity. And the lack of resolution from the Subaru dealer has lead me to report the issue here in hopes that if this is occurring for other vehicles that the company takes an actual resolution to solve the issue in their cruise control function.
NHTSA complaint #11731662 — an unverified report by a vehicle owner.
Have had two fuel level senders fail in one year of ownership. The dealer/manufacturer has replaced the first one, and a second replacement is pending. The failure shows inaccurate fuel levels including a full tank reading as 1/4 or less full. Subsequent refueling does not change the level reading. If the car thinks it is out of fuel, it may cease to operate (even if there is fuel in the tank).
NHTSA complaint #11651602 — an unverified report by a vehicle owner.
I was in a front end collision with a deer. Upon impact there was heavy damage to my front end and smoke coming from my engine bay. Within minutes a fire started and only a couple minutes later the entire car was engulfed. No airbags deployed during the accident, there was no collision detected by smartlink and I wasn't even notified of any issues by starlink until the car was completely burnt down and getting doused in water. It is the middle of winter and I couldn't begin to imagine how horrible that would've been had I needed to remove my 3 children from their car seats or if I would've smacked my head and passed out. I was very lucky to walk away unharmed, but many valuables were lost in my car from this.
NHTSA complaint #11635099 — an unverified report by a vehicle owner.
Over the course of 5 years, a lot has been mechanically wrong with our vehicle. Each service appointment yielded a 'cannot duplicate' response. Recently, my car has been in the service department a few times. My car had recall work performed on a ground bolt, and my husband advised them that the car had a 'rich fuel' smell when starting with the hood open. I've complained since 2021 of a smell when pulling up the mountain. The smell is what I described as a perm solution smell. Each time, the response was 'cannot duplicate.' In February, I took the car in to have the exhaust inspected because it was getting louder each passing day. I was advised that the entire exhaust needed to be replaced, and I would be responsible for costs. I brought my car home, unrepaired, and called Subaru of America to file a claim through them. I had repeatedly expressed concerns, and nothing was done, yet I'm expected to foot the bill now. Since February 12th, I have been back and forth with Subaru and just made the appointment to get the exhaust work completed, with a small contribution from Subaru. However, this past Saturday, [XXX] my vehicle caught on fire while driving. I am fine, but my vehicle has now been deemed a total loss. As I was descending the mountain, I smelled the same 'perm solution' smell, and shortly after, there was smoke coming from under the hood. The smoke entered the cabin as I pulled off the road. Upon exiting the vehicle, flames and smoke were visible from the hood. I grabbed my purse and ran, called 911, and watched my vehicle engulfed in flames. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11583533 — an unverified report by a vehicle owner.
Possible Transmission issue. The transmission was replaced in February by University Subaru in Columbia, Missouri. I have made a second appointment as the vehicle is still having the same issue shifting gears or going uphill. During a drive where there was a small incline of 10 degrees when the vehicle somewhat jumped or as if it skipped a beat. I had stopped in traffic and when the other cars started to move, I started to drive forward, and the car jumped. A gap in the acceleration. I am scheduled to take it in on the [XXX] of April. I will follow-up with you. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11582487 — an unverified report by a vehicle owner.
I bought the Vehicle new at Subaru of Bristol, TN. At around 23,000 miles it starting lurching forward while idling, jerking and hesitating when trying to accelerate, or not accelerating at all. It was so bad that at one point, I pulled out to pass and almost got rear ended by a semi because it simply wouldn't engage and accelerate. I took it to the Wallace Subaru dealership on [XXX] at 25,578 miles. They drove the vehicle and did a software update and claimed it was fixed. It seemed ok for a couple of days and then started having the same issues again. I took it back to Wallace on [XXX] at 27,248 miles and also engaged Subaru of America. They had the vehicle until [XXX] during which time they replaced the transmission. It seemed ok for a few days and started doing the same thing again. I took it back to the dealership on [XXX] at 29,449. They performed no service because they claimed they couldn't replicate the issue. This past weekend, I almost had another wreck trying to merge from the on-ramp onto the interstate because the car literally just stopped accelerating and jerked for several seconds before engaging again. Cars were literally slamming brakes behind me to keep from hitting me. This car is unsafe to drive and it's either going cause me harm or someone else because Subaru, despite knowing this is a known issue with this model and certainly with this particular car, seems like they need me to have a wreck before they will continue servicing the vehicle and finding and fixing the issue. They need to buy it back for at least what I owe. I certainly don't want to trade it for another Subaru. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11578417 — an unverified report by a vehicle owner.
Ascent randomly hesitates when pulling out into traffic.. both at slow speeds and when attempting to pass on interstate.. has been at dealer service numerous times regarding this , it periodically 'walking' when parked and ranfom inability to get hatch to work. Is currently at a different dealer service as previous dealer was unable to replicate and unwilling to keep vehicle for more than the hour or 2 of service appt. Prev dealer did replace hatch motor over a year ago..but still works randomly..their fix for this is to manually reset everytime.. as for ' walking ' when parked, my ascent will very slowly move 6 to 8 feet when parked..dealer 'fix' is to only park with parking brake on. Hesitation issue is now worse since prev dealer did 'system update'.. now rpm drop to 1000 or lower, then after 3 or 4 seconds, car revs to 3 or 4 k & takes off..during the 3 or 4 seconds of hesitation, I am literally sitting in the middle of the road as the car initially starts to move forward, then literally just sits there until it revs up and takes off. This is random, so no way to record..and no rhym or reason to know when it's going to happen. Last week it nearly got me t boned by an 18 wheeler when I pulled out across 4 lanes after getting fuel. Have contacted Subaru of America requesting their help but have gotten no reply despite my 7 voicemail left for the assigned rep. My car is a 22 ascent touring with 17k miles..has been at same dealer repeatedly for same issues and their repeated reply us "unable to duplicate, so no issue.".. I am on Subaru Ascent page on FB.. There are numerous people complaining of same nasty hesitation issue with no resolution from their dealer service. I bought this car with a 10 yr 100k warranty..fortunately I have not been financially responsible for the numerous service calls, but I am seriously concerned with being a statistic..my car is listed as one of the top 10 safest in a crash, but I don't like feeling like a ' test dummy'
NHTSA complaint #11575036 — an unverified report by a vehicle owner.
On Friday evening, February 23, 2024 , I pulled onto my driveway and came to a complete stop before driving into the garage . I reached up and hit the garage door remote. When the door began to go up I took my foot off the brake. Instead of creeping up the driveway the car took off like a proverbial "bat out of hell" It was as if I had pushed the accelerator compltely down.to the floor board. The brakes had no effect. I smashed through the garage door,. The car jumped a six inch concrete step up, obliterated the garage cabinets and pushed the contents of the cabinets and garage wall into our family room.The car came to a rest just outside our family room. My son opened the door to the garage and yelled out to me "Are you okay" Because the engine was still racing he said "Get your foot off the accelerator' My reply was I DON'T HAVE MY FOOT N THE ACCELERATOR". I then tuned the ignition off and the ordeal was over.. It appears that the engine continued to recieve fuel irregardless of the position of the accelerator., the automatic braking system failed miserably and the the forward collision warning was malfunctioning. I am waiting for the insurance company to remove the car from the garage and do a structural assessment.. Because there may be serious structual damage I want the insurance company to remove the vehicle less the second floor collapses onto the garage. My son was on the couch just seconds before the wall "exploded". The couch was moved eight feet across the room. If a piece of debris came through the windsield I also might have been injured. The potential for serious injury to others in another set of ircumstances also scares me. The malfunction came without warning. The damages will be in the tens of thousands of dollars. I am blessed that no one was injured or killed.
NHTSA complaint #11574100 — an unverified report by a vehicle owner.
On speeds of about 70+, both on cruise control and off, car jerks for about 5-10 seconds when accelerating on steep hills. It also happens after the car has been driving for more than 1hr or so. Fuel consumption is about 19-20mpg regardless of highway only driving contrary to advertised
NHTSA complaint #11502524 — an unverified report by a vehicle owner.
Pretty much from day 1, Ascent smells of gasoline in the cabin after parking the car either inside or outside, shade or shine, hot or cold, day or night, flat or not surface.. after having parked it. It doesn’t matter if it’s a quick trip or a long one, it can still happen after parking. Fumes come out of the vents up front. The concerning part is we have a toddler, which I suspect the NHTSA would have an issue breathing in hydrocarbons, let alone any passenger. It doesn’t happen all the time, but when it does it lasts a solid five minutes or so. Mentioned to Subaru at time of CVT recall, not even mentioned they checked it out on my paperwork. I even waited to say anything until our car was broken in and all possible lube/other off-gassing components to stabilize.
NHTSA complaint #11480174 — an unverified report by a vehicle owner.
The transmission is slipping and lunges forward, I believe this is the same reason there was a recall for my model car in 2019 & 2020. I have reported this to the car dealership and it will be placed in their service department tomorrow... I was carrying five (5) passengers in the car when it lunged forward and I almost rear ended the car in front of me and was also rear ended because I had to apply my brakes quickly. As stated above I'm hopeful this will be done by the dealership tomorrow. No inspection have been performed but it is scheduled to be done. There were no warnings of any kind other than a few hesitations in the forward motion just before the car lunged quickly forward.
NHTSA complaint #11473571 — an unverified report by a vehicle owner.
When the fan is on there is a strong smell of gasoline in the vehicle. This happens whether the vehicle is in motion OR is idling. The smell of gas fumes is very noticible if the fan for the heater/ac is pulling air from outside the vehicle. When the fan system is re-ciruclating the air from just the cabin, there is no smell. This is a very noticble smell and we have to drive with our windows open. My children are not able to be in this vehicle due to this smell. This is our family vehicle and daily driver. I have to drive this vehicle to work. This vehicle we have called about to multiple dealerships. They want to charge us over $300 dollars, but no one has ever heard of anything like this according to the dealers. The online forums say a completely different story. No warning lights or messages have happened. There has been no change to my gas mileage. We are current on all maintence. We have replaced the cabin and engine air filters, and we have replaced the gas cap to see if this would make a difference. It has not. There is no gas leak to the ground that is noticeable. But there is a faint gas smell in the engine area when the vehicle is running.
NHTSA complaint #11467418 — an unverified report by a vehicle owner.
We own a 2020 Subaru Ascent we purchased brand new. A few weeks ago we noticed a faint gasoline smell while at a red light. I thought it was a one time occurrence but it has been happening now every time the vehicle is at idle or stopped. I have read on Subaru owner forums about 2019 to 2021 models having this issue all the way from 2100 miles to almost 90,000 miles. Many customers have had to make multiple trips to the dealership to get charged diagnostic fees and many times they say they can’t smell the problem. I just recently contacted my dealership about this issue and found an old service recall about the low pressure fuel pump and was told to not believe everything I read online. This is the vehicle that my family uses and I’m not sure if this is safe for them to be in and is getting to sound eerily similar to when Ford had the CO problem in their explorer and people were crashing. For the amount I paid for this vehicle and all my service intervals at the dealership and many people having the same safety concern I hope this is investigated and I won’t have to pay for repairs.
NHTSA complaint #11463915 — an unverified report by a vehicle owner.
My Subaru 2020 with 16,000 miles stalled in the middle of driving down the road in Town, I was driving 35 mph when out of nowhere the car stalled. I was able to coast/turn on to a side street. I’m lucky the car had enough momentum to keep going or we would have been hit by traffic as the street we were on is a busy road. The car flashed all the lights when it stalled and refused to crank over, it was low on gas so I called AAA and they brought 5 gallons of gasoline and filled it. The technician then tried to get the vehicle to start but it wouldn’t. Luckily he offered to tow it to my house for free. I have tried multiple times to get the vehicle to start and it wont. It cranks but doesn’t actually move. I don’t know what’s wrong and now I have to have it towed to the the local dealership. This is the second major issue that has happened. The first one was that the transmission failed and with my car having a branded title for being stolen/recovery. Subaru would not replace the transmission at 7,600 miles and I had to find a used one to replace it with. I now just got the recall letter and have messaged Subaru about it.
NHTSA complaint #11458255 — an unverified report by a vehicle owner.
Unknown. I am smelling gasoline in the cabin of the car. A LOT of fumes fill my garage when I start the car. The car sometimes accelerates when I put it in park, resulting in more fumes. Fuel efficiency is lower than expected as well.
NHTSA complaint #11442758 — an unverified report by a vehicle owner.