"How reliable is the 2011 Gmc Terrain?"

"Based on 556 NHTSA complaints, the 2011 Gmc Terrain has a median complaint mileage of 77800 miles. The most common issue is ENGINE."

"What are common problems with the 2011 Gmc Terrain?"

"The most frequently reported component in NHTSA complaints for the 2011 Gmc Terrain is ENGINE, accounting for a significant portion of the 556 total complaints filed."

2011 Gmc Terrain: Reliability Data

Source: NHTSA — 556 complaints

556

Total Complaints

77,800mi

Median Mileage

ENGINE

Top Issue

Crash Reports

When Do Complaints Happen?

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

44,000 25th Percentile

77,800 Median Mileage

110,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE

178

POWER TRAIN

UNKNOWN OR OTHER

FUEL/PROPULSION SYSTEM

VISIBILITY/WIPER

ELECTRICAL SYSTEM

AIR BAGS

ELECTRONIC STABILITY CONTROL (ESC)

VEHICLE SPEED CONTROL

ENGINE AND ENGINE COOLING

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"TL*THE CONTACT OWNS A 2011 GMC TERRAIN. WHILE DRIVING APPROXIMATELY 15 MPH AND SHIFTING FROM FIRST TO SECOND GEAR THE VEHICLE JERKED. THE VEHICLE WAS TAKEN TO THE DEALER TWICE AND THE TECHNICIAN PERFORMED UPDATES TO THE ELECTRICAL SYSTEM. THE VEHICLE CONTINUED TO LUNGE AFTER THE UPDATES. THE APPROXI..."

"ON 11-21-10 MY FIVE YEAR OLD SON BUMPED HIS HEAD ON A HARD SURFACE THAT WAS NOT SAFELY DESIGNED OR PADDED PROPERLY. THIS HAPPENS WHEN THE BRAKES ARE APPLIED STRONGLY. NOTHING WAS DONE BY GM TO CORRECT THIS ISSUE. *TR"

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