There are 1 stored owner reports matching the engine leading-label group for the 2004 Scion xB in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)WHILE DRIVING POSTED SPEED ON INTERSTATE 71 SOUTHBOUND FROM CLEVELAND TOWARDS COLUMBUS OHIO, MY CAR DOWNSHIFTED BY ITSELF AND KEPT SLOWING DOWN. I WAS ABLE TO GET ON THE SHOULDER OF THE FREEWAY WHEN I NOTICED THAT THE CAR HAD STALLED. I ATTEMPTED TO RESTART THE CAR. IT WOULD CRANK NORMALLY BUT WOULD NOT START. I CHECKED ALL THE FLUIDS, THEY WERE AT OPERATING LEVELS. I PERFORMED A VISUAL CHECK UNDER THE CAR AND HOOD FOR FLUID LEAKS. THERE WERE NONE. I CALLED A NEARBY (40 MILES) TOYOTA DEALER WHO DISPATCHED A TOW TRUCK TO PICK US UP AND BRING THE CAR TO THEIR REPAIR CENTER IN DELAWARE OHIO. THIS OCCURRED YESTERDAY AFTERNOON, AND AS OF THIS WRITING ALL THEY AT BYERS TOYOTA, SUSPECT IS A POSSIBLE ECM FAILURE. THEY ARE STILL TROUBLESHOOTING. THEY HAVE NOT BEEN ABLE TO MAKE THE CAR START AND RUN SUCCESSFULLY. *TR
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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.