There are 3 owner-reported engine complaints for the 2017 Subaru Legacyin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
FLEXIBLE EXHAUST BELLOWS THAT CONNECT EXHAUST MANIFOLD TO CATALYTIC CONVERTER IS CRACKED AND EXHAUST FUMES ENTER THE CABIN. THIS CAUSES HEADACHES AND NAUSEA WHILE DRIVING AND IDLING ESPECIALLY WITH THE HVAC SYSTEM ON.THERE IS AN ACTIVE RECALL ON PRIOR YEAR VEHICLES WITH THE SAME BODY STYLE AND ENGINE COMBINATION. MY VEHICLE IS NOT COVERED.
WHEN I GO TO PARK MY 2017 SUBARU LEGACY, I PUT MY CAR IN PARK AND THE KEY WILL NOT TURN. IT GETS STUCK AND THE ENGINE WILL NOT TURN OFF. CONSEQUENTLY, I AM NOT ABLE TO TURN OFF MY CAR AND TAKE MY KEY OUT. THE DEALER TOLD ME TO BACK UP MY CAR AND THRUST MY GEAR SHIFTER INTO PARK. THEN I WAS ABLE TO TURN THE KEY OFF. HOWEVER, THE SITUATION CONTINUES TO HAPPEN EVERY TIME THAT I DRIVE THE CAR. IT IS CLEARLY AN ISSUE WITH THE ENGINE/CAR AS THIS NEVER HAPPENED PRIOR. I WAS TOLD THAT SUBARU'S FREQUENTLY HAVE DEFECTIVE SOLENOIDS THAT HOLDS THE KEY IN WHEN THE CAR IS RUNNING MIGHT BE DEFECTIVE. I HAVE NOT YET SEEN A RECALL.
TL* THE CONTACT OWNS A 2017 SUBARU LEGACY. WHILE DEPRESSING THE BRAKE PEDAL AND COMING TO A COMPLETE STOP, THE ENGINE SHUT OFF WITHOUT WARNING. THE CONTACT WAS ABLE TO RESTART THE VEHICLE AND IT OPERATED NORMALLY; HOWEVER, THE FAILURE LATER OCCURRED SEVERAL TIMES. THE DEALER PERFORMED DIAGNOSTIC AND FUEL TESTING, WHICH PRODUCED A CODE OF P1603 AND A GOOD FUEL READING; HOWEVER, THE CONTACT WAS ADVISED TO USE A DIFFERENT FUEL STATION. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 800.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026