Hummer Overview
Hummer Model Line Comparison
- Worst Model Year
- 2006
- Most Complaints
- Hummer H3
CarComplaints.com has 184 complaints on file for Hummer vehicles.
The worst models are the 2006 H3, 2007 H3, 2008 H3, 2009 H3, and the 2009 H3T.
Click on a model below for more information.
Browse Problems by Model
Worst Reported Hummer Problems
-
#1: Leaking Valves 2006 H3
- Average Cost to Fix:
- $2,500
- Average Mileage:
- 87,000 miles
-
#2: Engine Runs Roughly 2006 H3
- Average Cost to Fix:
- $3,000
- Average Mileage:
- 84,000 miles
-
#3: Cylinder Head Failure 2006 H3
- Average Cost to Fix:
- $3,400
- Average Mileage:
- 77,000 miles