2020 Subaru Ascent

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.

The contact owns a 2020 Subaru Ascent. The contact stated that while driving at an undisclosed speed, the Forward Collision Avoidance front camera became inoperable. The pre-collision, the braking control, and the Lane Departure warning lights were illuminated. The vehicle was taken to the dealer to be diagnosed; however, the cause of the failure was not yet determined. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 19,737.

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. The problem was diagnosed by Diablo Subaru of Walnut Creek. The vehicle was inspected and diagnosed by a Subaru dealership. The car tells me it cannot see the car in front. It also says it cannot see anything on haphazard basis. But it will also accelerate toward cars in front of it at close range because it cannot see.

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.

CVT jerks the vehicle and stutters when at certain rpms, making long car rides very uncomfortable. Feels like whiplash every so often. Very dangerous when trying to speed up to pass another vehicle because the vehicle doesn't respond and accelerate as it should. The dealer said its normal because of the CVT technology. They said they tried to reproduce it, but were only gone 5 minutes. The highway is 5 minutes away from dealership, one-way. I explained it happens after about 20 minutes of continously driving at speeds over 50 mph. The vehicle had only been inspected once for this issue. The dealer refuses to look at it again because they, "already explained it to [me]". There are no warnings or indicators prior to it happening.

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 had the vehicle inspected at 3 different Subaru dealerships and they all say nothing is wrong with either system. Now I have tried for 2 weeks to get a response from Subaru Customer Advocate with negative results.

The contact owns a 2020 Subaru Ascent. The contact stated that while driving at an undisclosed speed with the cruise control activated, the vehicle experienced phantom braking. The vehicle was taken to the dealer where it was diagnosed that the vehicle performed as designed. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 10,000.

Sudden unwanted rapid acceleration toward a building from parking lot causing head on collision: - Manual brakes failed - Automatic brakes did not engage - Airbags did NOT deploy after hitting an immovable object head on at least twice - Driver seatbelt did not lock - Starlink was not activated / notified - No collision warning was sounded (moot) Both driver and front passenger were severely injured and taken by ambulance to ER.

When applying brakes to 2020 Subaru Ascent limited (10,325 miles) the car shudders. Being an aircraft mechanic for over 45 years I knew the brake rotors were warped. I Took car to Subaru of Kennesaw GA. 7-13-2021. They opened work order SuCS159697. They resurfaced the rotors on front brakes and installed new pads. My safety concern is if brake rotor originally installed are warping and now you are removing the width of the rotor making it thinner and more likely to heat and warp sooner. When i questioned the maintenance technican about this concern he stated this was Subaru policy to resurface. Extreme heat to brakes could cause brake failure.