There are 1 owner-reported powertrain & transmission complaints for the 2012 Scion iQin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
WHEN COLD THE CV TRANSMISSION IN THE IQ WILL NOT ALLOW THE VEHICLE TO PULL AWAY UP A STEEP HILL. THIS HAS HAPPENED SEVERAL TIMES AND REPRESENTS A SERIOUS SAFETY CONCERN. THE ISSUE ONLY HAPPENS WHEN THE CAR IS COLD, IT WILL PULL THE SAME HILL WITH NO PROBLEM WHEN WARM. THE IQ HAS A CV TRANSMISSION AND IT FAILS TO ADJUST TO A HIGH ENOUGH RPM TO PULL AWAY UP A STEEP (10%) GRADE. THE PROBLEM MANIFESTS AS EITHER NO OR VERY SLOW FORWARD PROGRESS (LESS THAN WALKING SPEED) EVEN WITH THE ACCELERATOR HARD DOWN. THE DEALERSHIP SERVICE REP SEEMED UNCONCERNED ABOUT THE ISSUE. *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.
Data synced from NHTSA on May 4, 2026