Hummer H3 engine problems by year
123 NHTSA owner complaints name the engine across 4 H3 model years. The most reported year is 2006 with 52 reports.
| Year | Engine reports | Share | Median mileage | |
|---|---|---|---|---|
| 2009 H3 | 9 | 13% | — | |
| 2008 H3 | 18 | 16% | 71,000 mi | |
| 2007 H3 | 44 | 19% | 84,822 mi | |
| 2006 H3 | 52 | 14% | 86,884 mi |
Share is the fraction of that year’s complaints naming the engine. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.