2020 Subaru Ascent Problems

Half of the owners who gave a mileage had the problem by about 6,000 miles.

What to check before you buy

• Test every switch: windows, locks, mirrors, seat heaters, the screen, the backup camera, Bluetooth and every USB port.
• Watch the dash at startup. Every warning light should come on briefly and then go out.
• Have the battery and charging system tested. A weak alternator or battery drain shows up here.

Tools that help

What owners said

My car refused to start-pressed the ignition and it sputted, lots of lights went on and off and then the running lights came on and stayed on and ran the rest of the battery out. Had to charge it for hours to get it started again.Owner complaint, filed 2024

We purchased a used 2020 Subaru Accent from a dealership on 11/16/23. Twice since that date the car would not start due to the battery not having enough charge to start it. The dealership that we bought it from stated that prior to the sale date they had a new battery installed.Owner complaint, filed 2023

Half of the owners who gave a mileage had the problem by about 8,000 miles. Parts named most: Windshield (11).

What to check before you buy

• Check every light: headlights on low and high, fog lights, brake lights, turn signals and reverse lights.
• Run the wipers on every speed with washer fluid, and run the defroster front and back.

Tools that help

What owners said

Subaru has a known problem/design with their LED daytime running lamps on the Ascent model. Dealerships are seeing a high failure rate of these LED lights, and it is always with the left side headlamp assembly. The LED strip quits working. In my case my car has about 42,000 miles on it with estimated 1,500 hours of operation. LED lights…Owner complaint, filed 2026

The driver's side headlamp assembly (one complete piece, LED lighting) has a thin strip at the top that is used for daytime running lights. These are automatically on when the vehicle is on and it's not yet dark. In early 2024, this driver's side thin strip daytime running lights stopped working entirely. I've learned that the entire…Owner complaint, filed 2025

Half of the owners who gave a mileage had the problem by about 22,000 miles.

What to check before you buy

• Drive it from cold if you can. Shifts should be smooth in every gear, including reverse.
• Feel for slipping (revs rise without the car speeding up), shudder at low speed and a delay when you put it in gear.
• Listen for whining, which is a common CVT complaint, and clunks when you go from drive to reverse.
• If it has 4WD or AWD, engage it on the test drive and ask when the transmission and differential fluids were last changed.

Tools that help

What owners said

The contact owns a 2020 Subaru Ascent. The contact stated that on multiple occasions, while driving at various undisclosed speeds, the vehicle unexpectedly failed to accelerate and lost power. The contact also stated that the vehicle felt sluggish while driving. The vehicle was taken to a dealer, where it was diagnosed with chain…Owner complaint, filed 2026

The contact owns a 2020 Subaru Ascent. The contact stated that while driving at an undisclosed speed, the vehicle was skipping. The failure was recurrent. The contact associated the failure with NHTSA Campaign Number: 21V955000 (Power Train); however, the dealer informed the contact that the recall repair was completed on July 15, 2025.…Owner complaint, filed 2026, at 145,000 miles

Half of the owners who gave a mileage had the problem by about 10,000 miles.

What to check before you buy

• Ask the seller not to warm the car up, and start it cold. Listen for ticking, knocking or a rough idle in the first minute.
• Pull the oil dipstick and the oil cap. Low oil, a gasoline smell or a milky film on the cap are reasons to walk away or get an inspection.
• Plug in an OBD2 scanner. Stored or pending codes matter, and so do readiness monitors that show "not ready", which usually means the codes were cleared right before the sale.
• Ask for oil change records. A gap in the records on a model known for engine complaints is a negotiating point at minimum.

Tools that help

What owners said

Car has 82,000 miles, has been maintained and requires an engine replacement due to 'Sludge'. Reading a lot of forums that indicate this is a common situation with this make and model and likely due to manufacturer's defects.Owner complaint, filed 2026

The contact owns a 2020 Subaru Ascent. The contact stated that the vehicle was taken to the local dealer for routine service, where it was discovered that the cam carrier was leaking from the engine. While having an oil change, the mechanic informed the contact that there were no further leaks found. There were no warning lights…Owner complaint, filed 2025, at 120,000 miles

Half of the owners who gave a mileage had the problem by about 8,000 miles.

What to check before you buy

• The pedal should feel firm and the car should stop straight without pulling, grinding or a pulsing pedal.
• The ABS and stability control lights should go out after startup and stay out.
• Look through the wheels at the rotors. A deep lip on the edge means brakes are due soon, which is a fair thing to negotiate on.

Tools that help

What owners said

In December 2025, I had brake replacement, tire service, and wheel alignment performed at Monro Auto Service located at [XXX] child were traveling on the highway during a winter storm when the brakes began making a loud banging noise. My wife was unable to immediately locate a service location and was forced to continue driving for an…Owner complaint, filed 2026

The emergency brake occasionally comes on for no apparent reason. It has happened multiple times before but, never while driving until today. The button appeared to be stuck when I went to disengage it as well which made no sense. There was nothing in the way for it to get stuck. Upon further research in the Subaru forums it appears ours…Owner complaint, filed 2024

Half of the owners who gave a mileage had the problem by about 10,000 miles. Parts named most: Automatic emergency braking (8), Adaptive cruise control (5), Warnings (5).

What to check before you buy

• Where it is safe, try the adaptive cruise and lane keeping on the test drive and watch for sudden braking or warnings with nothing there.
• Check the windshield in front of the camera and the bumper sensors for cracks, chips or poor repairs.
• Ask whether the windshield has been replaced. The camera has to be recalibrated afterward, and many shops skip it.

Tools that help

What owners said

Right front camera is blocked by plastic since manufacture. The adaptive cruise control and forward emergency braking do not work reliably unless the object is the left visual field. My car will accelerate into a car in front with no emergency braking. No accident. so far, because I have been able to avoid accidents by braking myself.…Owner complaint, filed 2024

Since the day I bought this car anything that blows across the road causes the brakes to slam on....even at speed on the highway This is dangerous as hell. Additionally the eye sight disconnects intermittently for on reason or because of rain or a small bump in the road. You must stop and turn the car off and on to get a reset. I have…Owner complaint, filed 2023

What to check before you buy

• Smell around the engine bay and under the rear of the car for raw fuel.
• On the test drive, accelerate firmly from a stop and up a grade. Stumbling, surging or a flashing check engine light are red flags.
• Fuel pump recalls are common. Check this exact VIN for open recalls before you buy.

Tools that help

What owners said

I was almost in two accidents. Back on July 26,2021 I reported to the dealer that the car almost stalled twice, when I am coming to a yield or slowing down and then you accelerate The car has no power. You have to try to pull over before you get hit from behind. Then you step on the gas and it goes again (it does not completely stall) I…Owner complaint, filed 2021

NHTSA Recall Number 21V587. Cracked fuel pump potential due to improper manufacture, resulting in stalling, vehicle not starting or other fuel pump failure-related issues. Stalling while driving could result in an accident. Subaru’s recall notification should begin in September. Our family will be driving from NC to Maine on August 27…Owner complaint, filed 2021

Parts named most: Body (9).

What to check before you buy

• Look underneath with a flashlight. Utah road salt is hard on frames, brake lines and the bottoms of doors.
• Open and close every door, the hood and the liftgate, and lock and unlock each one.
• Use a paint thickness gauge and compare panels. A panel that reads very differently from the rest has likely been repaired.

Tools that help

What owners said

I can’t say what caused the huge crack in the sunroof bc there is no chips on the outside and no chips or breaking point on the inside. We went to get in the car and open up the sunroof and it has a huge crack that is a known issue if you look it up online. So far we haven’t been able to get it fixed bc of the amount of money it cost to…Owner complaint, filed 2024

Driving at speed of 50+, the hood (both sides) wobble/raise up. Faster you drive it raises up further to the point it interferes with view. Concerned it will detach from hood struts and cause major damageOwner complaint, filed 2024

What to check before you buy

• Drive over a few bumps and potholes slowly with the radio off and listen for clunks or rattles.
• Check the tires for uneven wear on the inside or outside edges, a sign of alignment or suspension trouble.
• Look behind the wheels for oily, wet shocks or struts.

Tools that help

What owners said

My strut bearings have been replaced several times in the drivers sides, my shock and strut has been replaced twice on the drivers side and now the passenger side is doing the same thing. The dealership tells me that there is nothing wrong but research shows this car has known suspension issues. My passenger side front has a loud…Owner complaint, filed 2026

The contact owns a 2020 Subaru Ascent. The contact stated that while driving at an undisclosed speed, there was an abnormal rumbling sound coming from the undercarriage while driving over bumps in the roadway. No warning light was illuminated. The vehicle was taken to an independent mechanic who diagnosed the vehicle and determined that…Owner complaint, filed 2025

What to check before you buy

• The air bag (SRS) light should come on at startup and go out within a few seconds. If it stays on, the system may not work in a crash.
• Air bag recalls are some of the most serious. Check this exact VIN for open recalls and get proof any recall work was done.

Tools that help

What owners said

The contact's wife owns a 2020 Subaru Ascent. The contact stated that while his wife was driving at an undisclosed speed, the vehicle was stopped in traffic when a semi-trailer collided with another vehicle, causing that vehicle to crash into the front end of her vehicle. It resulted in a four-vehicle collision. On impact, the contact's…Owner complaint, filed 2022, at 31,000 miles

The contact owned a 2020 Subaru Ascent. The contact was driving approximately 35 MPH on a highway when the contact's husband lost consciousness causing him to crash into a truck. As a result, the event leads to a 4 vehicle collision. The driver was transported via ambulance to the hospital where it was confirmed that there were no…Owner complaint, filed 2022, at 30,000 miles

What to check before you buy

• On the test drive, press the gas gently and firmly. The response should be smooth with no lag or surge.
• Set the cruise control, then use resume and cancel to make sure each one works.

Tools that help

What owners said

I have had my lane assist come on by its self a few times, which is very dangerous because it seems to take over and will pull on the steering wheel. I’ve also brought my car back to the dealership a handful of times to have it hooked up to a computer and also someone ride with me because the car will either hesitate to accelerate or…Owner complaint, filed 2026

The vehicle hesitates like it doesn’t want to get up to speed, despite pressing the gas pedal to accelerate. The RPM needle bounces. Dealership has not been able to “replicate the hesitation I feel when accelerating.” They originally tried to say I didn’t tell them the problem was happening when it had time to warm up, which is a lie, I…Owner complaint, filed 2024

What to check before you buy

• Read the four-digit DOT date on each tire. Tires older than about six years should be replaced, whatever the tread looks like.
• Check tread depth on all four. On AWD vehicles all four tires should match.
• The tire pressure light should go out after startup.

Tools that help

What owners said

After replacing tires I started hearing noises from rear wheel. I searched online and it appears there is an issue with wheel bearings on several Subaru models (see YOUTUBE video by FIXBOOK dated July 12, 2026). The issue was confirmed by my Subaru dealer on 9/10/2026. Subary wheel bearings prior to 2026 were subject to poor design…Owner complaint, filed 2026

245/50/r20 I was driving on interstate 35 going south by esko, mn. When the passenger rear tire exploded. The whole sidewall came loose and the tread was completely loose and flaping agains the undercarriage.Owner complaint, filed 2022

What to check before you buy

• Turn the wheel lock to lock while parked and listen for groaning, clicking or binding.
• On a straight road the car should track straight with the wheel centered and no loose feeling.
• A power steering warning on the dash, even briefly, deserves a mechanic’s look before you buy.

Tools that help

What owners said

The contact owns a 2020 Subaru Ascent. The contact stated that while driving on several occasions at various speeds, the steering wheel became loose and then tightened inadvertently. The vehicle was taken to a dealer where the failure could not be replicated. The contact also stated that on several occasions while driving, the vehicle…Owner complaint, filed 2026, at 82,000 miles

Component- steering locks Safety risk - vehicle cannot be started. Therefore if in an area of risk - cannot start vehicle. This randomly happens pulling into parking spaces. It is repetitive. I’m older and alone, scary when it happens as you are stranded. And call to Subaru roadside only option was to tow the vehicle the vehicle to…Owner complaint, filed 2024

What to check before you buy

• Pull out and latch every seat belt, and let each one retract on its own.
• Try every seat adjuster, and watch for a passenger air bag "off" light when an adult is in the seat.

Tools that help

What owners said

The driver front seat bottom frame has came loose and rocks back and forth when driving, especially during start and stops. It was serviced and the dealer stated the movement comes from the side rails of the seat and is referenced via bulletin 12-288-20 stating its a known issue and the frame has been redesigned for this issue. After…Owner complaint, filed 2025

The contact owns a 2020 subaru ascent. The contact stated the passenger side front seat was unable to be extend far enough backwards for the seat belt to be used. The contact stated that due to his height and weight a standard seat belt was not adequate to securely fastened. The [VIN] was notified of the issue and no further assistance…Owner complaint, filed 2020