FaultScore

Hummer electrical problems

Owners have filed 332 complaints with NHTSA about the electrical system on Hummer vehicles — 22% of everything reported about the brand, across 5 models. The model that accounts for most of them is the Hummer H3, worst in 2006.

These are raw counts. A model that sold in millions appears near the top for that reason alone — the grade never compares one model with another.

332

Complaints

22%

Share of all Hummer complaints

2

Crashes

46

Fires

Which Hummer models have the most electrical problems

H3 247 74.4%

Worst in 2006

H2 74 22.3%

Worst in 2005

Worst Hummer model years for electrical problems

Vehicle Complaints Share of that year Median miles Grade
2006 Hummer H3 97 21% 87,500 F
2007 Hummer H3 76 23% 90,000 F
2008 Hummer H3 34 22% 80,000 F
2009 Hummer H3 34 36% 74,100 F
2005 Hummer H2 27 26% 51,059 F
2003 Hummer H2 24 13% 55,894 B
2004 Hummer H2 14 19% 98,720 C