There are 1 owner-reported engine complaints for the 2016 Scion iAin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
WHEN AT A STOP THE ENGINE STARTS TO SHAKE LIKE IT'S ABOUT TO TURN OFF WE BOUGHT IT WITH 29000 MILES NOTICED IT A WEEK AFTER WE BOUGHT IT AND IT HAS DONE IT A FEW TIMES THE TOYOTA DEALERSHIP COULDN'T FIND ANY CODES TO REMEDY IT. THE CHECK ENGINE DOES NOT COME ON BUT IT DOES SHAKE VIOLENTLY.IT HAS 35000 MILES NOW.I HAD THE THROTTLE BODY CLEANED AND IT STILL PUTTERS AT THE LIGHT. MOSTLY WITH THE A/C OFF
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