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2021 Subaru Outback Engine Problems

7 owner-reported engine complaints from NHTSA data

7
Complaints
Feb 2024Oct 2024
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Owner Complaints (7)

highENGINE AND ENGINE COOLING,LANE DEPARTURE
Filed: Jul 2025

Your car stalled while driving at 55 MPH, and the check engine light came on along with an "Eyesight" warning message. The dealer found that the thermal control valve had failed and replaced it to fix the problem. This happened at 18,640 miles, and the manufacturer has noted it under extended warranty coverage.

NHTSA #: 11675847
mediumENGINE
Filed: Oct 2024

Thermo control valve failure. Would not cover it

NHTSA #: 11620185
mediumENGINE
Filed: Mar 2024

failure/malfunction of thermo coolant control valve some of the systems safety features have been disabled making it unsafe for me to drive vehicle The car gets hot and high beams don’t work heater doesn’t work. Diagnostic was performed by independent mechanic determining this issue Warning lights on dashboard to check engine and many other lights flashed Repairs cost over $1700 which is not affordable especially since this a manufacturer defective part.

NHTSA #: 11576782
mediumENGINE,FORWARD COLLISION AVOIDANCE
Filed: Feb 2024

While doing a casual drive, engine made a noise after work at night. Woke up in the morning and check engine light as well as the EyeSight light was on. Checked everything and noticed the coolant was low; but upon filling it, did not resolve the issue. Took it to a Subaru service center and was told that it the Temp Valve had been stuck and that they had replace not only one for my year model the same day, but also a ‘20 and ‘19 in the past week. Have looked online and noticed others have been unfortunate around the same mile range 60k.

NHTSA #: 11573060
mediumENGINE
Filed: Jun 2022

The contact owns a 2021 Subaru Outback. The contact stated while at a traffic light, the vehicle stalled. The instrument panel lights illuminated then went dark. The police came but there was no police report filed. The police had the vehicle towed to a dealer. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 12,500.

NHTSA #: 11467029
mediumENGINE
Filed: Sep 2021

Bought this new Subaru in December and the battery died twice after a week and a half of not driving. The first time I had to get the battery replaced. If I don't start the car every few days (and during COVID I don't) then the electricity completely drains the battery dead.

NHTSA #: 11433407
mediumENGINE AND ENGINE COOLING
Filed: Sep 2021

The contact owns a 2021 Subaru Outback. The contact stated while coming out of a full stop, the vehicle would stall without warning. The contact stated no warning light was illuminated. The vehicle was taken to a local dealer but was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 6,500.

NHTSA #: 11431370

Other 2021 Subaru Outback Issues