Hummer H3
engine Problems
Here are Hummer H3 engine problems, by model year. The most common H3 engine problems cost $3,000 to fix & occur at 83,000 miles.
The worst model years for engine problems are the 2006 H3, 2007 H3, and the 2008 H3.
Worst Hummer H3 Engine Problems
-
#1: Leaking Valves 2006 H3
- Average Cost to Fix:
- $2,500
- Average Mileage:
- 87,000 mi
-
#2: Engine Runs Roughly 2006 H3
- Average Cost to Fix:
- $3,000
- Average Mileage:
- 84,000 mi
-
#3: Cylinder Head Failure 2006 H3
- Average Cost to Fix:
- $3,400
- Average Mileage:
- 77,000 mi