2006 Hummer H3: Reliability Data

Source: NHTSA — 470 complaints
470
Total Complaints
80,000mi
Median Mileage
ELECTRICAL SYSTEM
Top Issue
11
Crash Reports

When Do Complaints Happen?

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

48,871 25th Percentile
80,000 Median Mileage
106,640 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ELECTRICAL SYSTEM
90
ENGINE
52
VISIBILITY/WIPER
29
UNKNOWN OR OTHER
28
ENGINE AND ENGINE COOLING
26
SUSPENSION
25
STRUCTURE:BODY
14
AIR BAGS
11
STRUCTURE
11
SERVICE BRAKES, HYDRAULIC
10

Severity Assessment

11
Crashes
34
Fires
10
Injuries
1
Deaths

Sample Complaint Reports

"DT: THE CONTACT STATES WHILE DRIVING THE FRONT DIFFERENTIAL RING GEAR FELL APART. THE MANUFACTURER WAS CONTACTED. THEY REPAIRED THE VEHICLE AND HAVE NOW VOIDED THE VEHICLE WARRANTY. *JB"
"IN A TEST DRIVE I FIND THAT THE HUMMER H3 HAS THE BRAKE PEDAL AND THE ACCELERATOR PEDAL TOO CLOSE, THE SHOES LIPS GET STUCK IN THE BACK OF THE BRAKE PEDAL WHEN I TRY TO BRAKE IN EMERGENCY SITUATION. THIS MAY CAUSE FUTURE ACCIDENTS. I CONTACTED GM AND THEY REPLAY THAT THERE IS NO PLAN TO FIX THIS DEF..."
"DT*: THE CONTACT STATED WHILE DRIVING AT 5 MPH THE CHILDREN IN THE BACK SEAT UNLOCKED THE REAR PASSENGER DOOR. THE DOOR HANDLE WAS RAISED, HOWEVER THE DOOR REMAINED SHUT. A FEW MOMENTS LATER THE CONTACT PULLED INTO THE DRIVEWAY. WHILE THE VEHICLE WAS STILL IN MOTION, THE BACK DOOR FLEW OPEN. AS..."

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