2020 Subaru Ascent problems

Filed Oct 20, 2026 · Transmission · AR

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 slippage in the clutch, causing the loss of power. The contact was informed that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure via telephone. The approximate failure mileage was 137,000.

Filed Oct 19, 2026 · PA

I have experienced problems with the rear lift gate on multiple occasions. It is working intermittently and locking me out. The beeping while the car is in motion is continuous and it drained the battery; I had to purchase a new battery. Another time we had to disconnect the battery (as suggested by the dealership) and reconnect it to fix the problem.

Filed Sep 11, 2026 · Wheels · FL

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 resulting in premature corrosion, complete failure and possible separation from the under carriage. New Subaru wheel bearing was redesigned in 2026 (part 28473XC00E), but Subaru never recalled the defective wheel bearings in Tribeca, WRX, Forester, Ascent, Outback models sold prior to 2026?

Filed Sep 4, 2026 · Lights · FL

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 are designed to last a minimum of 30,000 and up to 100,000 hours. I see these models all the time with their left daytime lamps out. These lamps are provided for safety reasons and to bring visibility to other drivers. Even Subaru dealer's state that this is a known problem and always the left headlight assembly. FYI, the whole assembly needs to be replaced, and the price range is around $1,300.00. I have reached out to Subaru, and they simply state vehicle is out of warranty, and they will not do anything about it. I say this is a known imbedded issue due to engineering, quality control etc. and each delivered vehicle is more than likely going to experience this issue which again I perceive as a safety issue. Again, LED lights are used because of their long-life expectancy. But in Subaru's case, their lights are designed to fail much sooner than one should reasonably expect. Subaru needs to do the right thing and stand behind these faulty lights and return the vehicle to the level of safety it was intended to offer. However, the only way they are possibly going to consider this if the NHTSB gets involved. I have provided a phot of my car showing the lights. One is lit and one is not.

Filed Aug 27, 2026 · Transmission · 145,000 miles · SC

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 the federal safety agency Campaign Number: 21V955000 (Power Train); however, the dealer informed the contact that the recall repair was completed on July 15, 2025. The contact was the vehicle owner on that date and stated that the vehicle was never taken to the dealer for the recall repair. The dealer diagnosed the vehicle with CVT failure and advised that the vehicle was outside warranty coverage. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 145,000.

Filed Aug 20, 2026 · Transmission · CO

1. The vehicle is experiencing a transmission malfunction/failure. The dealership was able to replicate the issue and confirm the malfunction, which caused the check engine light to illuminate. The vehicle is currently being evaluated by the dealership, and any failed components should be available for inspection upon request while the vehicle remains in their possession. 2.The transmission malfunction is affecting the vehicle's ability to accelerate, maintain speed, and operate predictably. This creates a potential safety risk when the vehicle loses power or experiences unexpected changes in operation while driving, particularly in traffic or at highway speeds. The concern is heightened because transmission failure can leave the vehicle unable to safely continue operating and can cause collisions with other vehicles on the road. 3.Yes. The dealership was able to reproduce the issue, which caused the check engine light to illuminate and confirmed that there is an active problem requiring further diagnosis/repair. 4.The vehicle has been inspected and evaluated by the Subaru dealership/service center. To my knowledge, it has not been inspected by police or insurance representatives. Subaru of America has reviewed my case and the repair history but has declined assistance with the repair or to open a case. 5.Yes. The dealership was able to reproduce the issue, which caused the check engine light to illuminate. The transmission problem was also associated with operation that prompted me to have the vehicle inspected. The check engine light illuminated when the dealership replicated the condition. This current transmission is a replacement transmission done by Subaru do to a previous recall of the same issue. The current transmission only has 83,000 miles on it.

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 Jul 20, 2026 · Suspension · MI

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 metallic grinding sound when turning the wheel in park. I’m told this is the brakes which makes no sense. The car feels like it is on ice or sailing down the road, and the car does not maintain an alignment causing the insides of tires to wear out after 15,000-20,000 miles and need to be replaced.

Filed May 29, 2026 · Brakes, Driver assistance · FL · crash

I am reporting a repeat safety concern involving a 2020 Subaru Ascent. The vehicle was involved in two separate collisions after failing to decelerate as expected following normal brake pedal application. The first incident occurred on January 26, 2026. While approaching a traffic signal, I applied the brakes under normal driving conditions. The vehicle did not slow as expected and struck the rear of another vehicle. Property damage occurred, but no injuries were reported. The second incident occurred on May 5, 2026. While approaching a stop sign at approximately 35 mph, I again applied the brakes under normal driving conditions. The vehicle did not decelerate as expected and entered the intersection, colliding with a vehicle traveling perpendicular to my direction of travel. Both vehicles were towed. No injuries were reported. During both incidents, there were no forward collision warnings, automatic emergency braking interventions, or other alerts observed prior to impact. Following the second collision, the vehicle was inspected by an independent technician. Brake components inspected were found to be within serviceable condition and no evidence of neglect or improper maintenance was noted. During inspection, abnormal brake pedal behavior was observed, including continued downward pedal travel while steady pressure was applied. The technician documented that the reported condition was not consistent with normal braking performance and stated that an intermittent hydraulic and/or brake assist related issue could not be ruled out. The vehicle has been regularly maintained according to manufacturer recommendations. Due to the repeat nature of the condition, the lack of warning or intervention from safety systems, and the occurrence of two collisions despite normal brake application, I believe this condition represents a significant safety risk. The vehicle has since been declared a total loss and may be available for further inspection.

Filed May 22, 2026 · PA

I am submitting this complaint regarding a known exhaust manifold/flex pipe failure affecting my 2020 Subaru Ascent Touring (VIN: [XXX] ). My vehicle was diagnosed by a Subaru dealership with a “broken flex pipe on the header” causing excessive exhaust noise and exhaust leak concerns. Repair estimate was slightly over $2,000. After researching the issue, I discovered numerous reports from other Subaru Ascent owners describing identical failures involving cracked exhaust manifold welds and failed flex pipe sections. Subaru has also issued TSB 09-106-23 involving exhaust manifold weld cracking and redesigned replacement components for this issue. Symptoms began in the low 70,000-mile range and progressively worsened before formal diagnosis at approximately 83,000 miles. This appears to be a widespread defect involving emissions/exhaust components. Many owners online report loud cold-start exhaust noise, cracked manifold welds, failed flex pipe sections, exhaust fumes/smells, and expensive manifold replacement repairs. My concern is both the widespread nature of the defect and Subaru’s handling of complaints regarding the issue. Initially, Subaru denied assistance because the vehicle has a branded title. After documentation was provided showing federally mandated emissions-related coverage/extensions were active for this VIN regardless of title status, the denial basis changed to mileage. After explaining symptoms began prior to the mileage threshold, Subaru then cited lack of dealership service history after my ownership despite the vehicle being regularly maintained by a local mechanic. I am requesting the federal safety agency review whether this exhaust manifold/flex pipe defect represents a broader reliability and emissions-related defect trend affecting Subaru Ascent vehicles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)