Hummer H3 engine and engine cooling problems by year
53 NHTSA owner complaints name the engine and engine cooling across 4 H3 model years. The most reported year is 2006 with 35 reports.
| Year | Engine and Engine Cooling reports | Share | Median mileage | |
|---|---|---|---|---|
| 2009 H3 | 1 | 1% | — | |
| 2008 H3 | 4 | 4% | — | |
| 2007 H3 | 13 | 5% | 59,614 mi | |
| 2006 H3 | 35 | 10% | 52,000 mi |
Share is the fraction of that year’s complaints naming the engine and engine cooling. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.