2016 Scion Ia: Reliability Data

Source: NHTSA — 39 complaints
39
Total Complaints
40,000mi
Median Mileage
ENGINE
Top Issue
8
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

14,500 25th Percentile
40,000 Median Mileage
76,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE
8
ELECTRICAL SYSTEM
7
AIR BAGS
6
POWER TRAIN
5
SERVICE BRAKES
4
UNKNOWN OR OTHER
3
VEHICLE SPEED CONTROL
3
WHEELS
1
STRUCTURE:BODY
1
STEERING
1

Severity Assessment

8
Crashes
0
Fires
5
Injuries
0
Deaths

Sample Complaint Reports

"I AM A 113 LB ADULT. WHENEVER I SIT ON A 2-INCH FOAM CUSHION IN THE PASSENGER SEAT OF OUR SCION IA, THE "PASSENGER AIRBAG OFF" WARNING ILLUMINATES ON THE DASHBOARD. THE SEAT IS TOO LOW AND HARD FOR ME TO SIT COMFORTABLY WITHOUT THE CUSHION, AND I ALSO HAVE TO USE IT WHEN I DRIVE THE SCION IA. BUT..."
"MY DEALER LOST MY KEY, AFTER THE GAVE ME THE CAR AND I DROVE OFF TO COSTCO WITHOUT NOTICING I DIDN'T HAVE THE KEY, FOUND OUT THE CAR IS STARTING WITHOUT THE KEY IN THE CAR. DEALER KEPT WITH THE CAR WHILE TOYOTA CORP DECIDE HOW TO FIX THE PROBLEM, THE GAVE ME A LOANER CAR WHILE THEY DO THE JOB."
"TL* THE CONTACT OWNS A 2016 SCION IA. WHILE AT A STOP, ANOTHER VEHICLE WENT THROUGH A STOP LIGHT AND CRASHED INTO THE FRONT PASSENGER AND DRIVER'S SIDE OF THE CONTACT'S VEHICLE. THE OTHER VEHICLE LEFT THE SCENE OF THE CRASH. THE FRONT AIR BAGS DEPLOYED WITH FORCE. THE DRIVER AND FRONT PASSENGER SUST..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28