2012 Gmc Terrain: Reliability Data

Source: NHTSA — 498 complaints
498
Total Complaints
80,170mi
Median Mileage
ENGINE
Top Issue
30
Crash Reports

When Do Complaints Happen?

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

55,000 25th Percentile
80,170 Median Mileage
105,912 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE
168
VISIBILITY/WIPER
74
POWER TRAIN
37
UNKNOWN OR OTHER
37
ELECTRICAL SYSTEM
30
FUEL/PROPULSION SYSTEM
27
AIR BAGS
25
ELECTRONIC STABILITY CONTROL (ESC)
13
VEHICLE SPEED CONTROL
11
EXTERIOR LIGHTING
10

Severity Assessment

30
Crashes
12
Fires
34
Injuries
0
Deaths

Sample Complaint Reports

"TL * THE CONTACT OWNS A 2012 GMC TERRAIN. THE CONTACT WAS DRIVING 5 MPH WHEN THE VEHICLE STALLED AND THE CHECK ENGINE LIGHT ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO THE DEALER AND THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGE W..."
"2012 GMC TERRAIN. CONSUMER STATES THE PASSENGER SEATS AIR BAG SYSTEM AND CONSTRUCTION MAKE THE VEHICLE UNCOMFORTABLE AND INITIALLY UNSAFE FOR HIS WIFE *TGW A COUPLE OF DAYS AFTER PURCHASING THE VEHICLE, THE CONSUMER'S WIFE USED A SEAT CUSHION TO CONFORM TO THE SEAT AND THE THEY SOON DISCOVERED THE ..."
"TL* THE CONTACT OWNS A 2012 GMC TERRAIN. WHILE DRIVING APPROXIMATELY 65 MPH THE CONTACT OPENED THE REAR DRIVER AND PASSENGER SIDE WINDOWS AND NOTICED THE SUNROOF BEGAN TO VIBRATE VIOLENTLY. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE TECHNICIAN STATED NOTHING COULD BE DONE BECAU..."

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