2021 Chevrolet Trailblazer: Reliability Data

Source: NHTSA — 239 complaints
239
Total Complaints
18,300mi
Median Mileage
UNKNOWN OR OTHER
Top Issue
17
Crash Reports

When Do Complaints Happen?

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

2,511 25th Percentile
18,300 Median Mileage
40,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

UNKNOWN OR OTHER
41
POWER TRAIN
34
ELECTRICAL SYSTEM
31
ENGINE
29
SERVICE BRAKES
28
FUEL/PROPULSION SYSTEM
16
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
7
STEERING
6
STRUCTURE:BODY
6
VEHICLE SPEED CONTROL
5

Severity Assessment

17
Crashes
5
Fires
11
Injuries
0
Deaths

Sample Complaint Reports

"WHEN IT IS DARK OUTSIDE AND YOU PUT THE VEHICLE IN REVERSE, THE LIGHTS NEXT TO THE BACK UP CAMERA CAUSES THE SCREEN INSIDE THE CAR TO SHOW BRIGHT WHITE. THERE IS NO WAY TO SHUT THE SCREEN OFF WHEN IN REVERSE. I HAVE TURNED THE BRIGHTNESS ALL THE WAY DOWN BUT IT IS STILL VERY BRIGHT MAKING IT IMPOSSI..."
"WHEN IT IS DARK OUTSIDE AND YOU PUT THE VEHICLE IN REVERSE, THE LIGHTS NEXT TO THE BACK UP CAMERA CAUSES THE SCREEN INSIDE THE CAR TO SHOW BRIGHT WHITE. THERE IS NO WAY TO SHUT THE SCREEN OFF WHEN IN REVERSE. I HAVE TURNED THE BRIGHTNESS ALL THE WAY DOWN BUT IT IS STILL VERY BRIGHT MAKING IT IMPOSSI..."
"BRAKES REQUIRED EXTREME PRESSURE TO STOP THE VEHICLE. ACCIDENT BARELY AVOIDED DURING RUSH HOUR TRAFFIC ON BUSY SURFACE ROAD."

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