2020 Subaru Outback Engine Problems
17 owner-reported engine complaints from NHTSA data
Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.
Owner Complaints (17)
On 12/6/2023, as I slowly turned right into a parking space, my car suddenly surged forward and accelerated without my input to the gas pedal. The brakes did not work, and there was no resistance from the brake pedal when I repeated to push it. The car continued to accelerate for about 80 ft as I focused on steering to avoid hitting other cars parked in the lot. The car ran over a curb, up a grassy area, and crashed into a row of trees. The airbag did not deploy. I sustained neck muscle strain/whiplash, and bruises to my chest and right knee. My safety was at risk, as well as anyone or anything that was in the car's path since I had no control over the acceleration or the brakes. The car is a 2020 Subaru Outback with about 44000 miles. It is in a body shop and they have not yet determined if it is safe to work on. So far, they have observed the engine race when the car was turned on. There were no warning signs prior to the acceleration. When I called the Subaru dealer service department, I was told that they never heard of this before and it had to have been my fault. They said I could bring it in after the body damage is repaired, and that I can pay for a diagnotic report. However, they expect that the report will not show anything.
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Your 2020 Subaru Outback's engine oil pan seal is leaking oil, which gets pushed backward onto the transmission while you drive. The dealership confirmed this is a known manufacturing problem with the 2.4L Turbo engine, and the leak is significant enough that oil is traveling along the entire transmission assembly. This creates a potential fire hazard if the oil contacts hot exhaust components like the turbocharger or catalytic converter. The repair will likely involve replacing the oil pan seal and cleaning the affected transmission area.
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Vehicle just quit running going down the road called roadside assistance after approximately two plus hours no help policeman comes along and said need to move car so he called a tow service and within minutes tow truck comes and tows my vehicle to Subaru dealership in Des Moines Ia.
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The contact owns a 2020 Subaru Outback. The contact stated while driving 30 MPH, the vehicle began to jerk and then stalled. The check engine warning light and several unknown warning lights were illuminated.
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The contact owns a 2020 Subaru Outback. The contact stated that while enter a freeway the speed suddenly reduced to approximately 15 MPH. The vehicle failed to exceed 15 MPH.
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Wife reported car stalled when making a turn after stopping. While turning she said it felt like the car was not getting any gas and had no power. She let the vehicle roll to a stop on the side of the road.
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Tl* the contact owns a 2020 subaru outback. The contact stated that while driving 45 MPH exiting the highway, the vehicle started to shake then stalled. The check engine, oil and battery warning lights illuminated.
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The contact owns a 2020 Subaru Outback. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the thermo-control valve. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 90,000.
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A well-known failure of the Thermal Control Valve (TCV) occurred, which disabled many or most of the safety features on the car in addition to crippling the heat output in the cabin. Additionally, depending on which way the valve sticks, it could overheat the car and ruin the engine, or worse. Car is under 4 years old and repair estimate is nearly $1900. There is a technical safety bulletin [XXX] that outlines a redesigned TCV. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
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The factory 2020 Subaru Outback Wagon is built with a Thermo Control Valve that is, essentially, made out of a composite plastic. As this part is part of the engine cooling system, it is placed under both heat and pressure. While it controls the anti-freeze to the heater core in the passenger compartment, it is also attached under cover to metal fittings. While the car now has about 90,000 miles, this control valve cracked and began to leak anti-freeze on top of the engine. Without cooling, the engine would likely be ruined. Thus, the car required immediate service. When a fault like this occurs, by the way, the Subaru Eyesight System shuts down taking with it various safety features. I had the defective part replaced and it's replacement is not made of composite plastic but, rather and more appropriately, metal. It is my belief that the selection of the orignal part was a design defect ignoring the potential for differential expansion of the parts when exposed to such temperatures. Failure was inevitable. It is worth noting this is not an inexpensive repair as numerous parts have to be removed to access this valve. Likewise, the service representative made note that numerous other customers have had to have the same service.
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At one year and 7,358 an engine oil leak had to be repaired, and still seepage and monitor is recommended. Then at three years and 28,175 the coolant bypass valve failed and was repaired. Both problems were covered by warrently, but as I live 60 miles from the dealer it was a hassle.
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I just purchased a Outback XT with the 2.4l turbo engine. After more researching with owning the car I discovered these cars with this engine can have a oil pan leak due to the bad RTV sealant applied to the lower oil pan from the factory. I went outside to go look under my car to see if this issue is occurring to mine.
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Check engine light came on with error code p26a5 which seems to be known issue with the Thermo Control Valve.
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The contact owns a 2020 Subaru Outback. The contact stated that the coolant needed to be replenished frequently. The contact had taken the vehicle to the dealer where a pressure test was performed however, the mechanic did not discover failure with the vehicle.
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The EyeSight system will randomly not load at times and need to be reset for Rear Automatic Braking and other EyeSight safety features to become available. This usually only occurs within 30 seconds of engine startup but always occurs when plugging in a phone with Android Auto (a phone with Apple Car Play has never been used for verification). Warning message is displayed on driver's side message center stating EyeSight, RAB, and other safety features are not available. Reproduction of problem is difficult as it seems random.
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My car stalled at a stop light when I attempted to go when the light turned green. The car was in auto shut off mode so the engine was not running at the time. When I took my foot off the brake to go, the car didn’t restart and started shaking and all the lights on the dash came on. There was also a piercing warning sound and the infotainment screen showed that the “eyesight “ and all other driver assistance program were off but my audiobook continued to play. I tried restarting the car but it would not restart. I put the car in park and tried to get it to turn off but it wouldn’t. Since I was at a light and cars were behind me, I put on my hazards and waited a few minutes and got the car to restart and to get that noise to stop, sounded like a siren. My fuel warning had just come on but it indicated that I had 50 miles so not sure if it has anything to do with it?
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There is no way to disable the auto start/stop system. In florida the temp can get over 95 degrees. After 10-15 seconds of the car being off the car starts to heat up.
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