2007 Hummer H3: common problems and reliability

The 2007 Hummer H3 has 237 owner-filed NHTSA complaints and 2 recalls on record. The most-reported areas are electrical system and engine. Owners most often flag underpowered 3.7l inline-5 cylinder engine: described as sluggish, struggling with highway merging and towing, "feels like it belongs in a lawn tractor". frequency: very frequent.

Safety record for the 2007 model year

237
Owner complaints
2
Recalls
12
Crash reports
18
Fire reports

Source: NHTSA complaints and recalls filed for 2007 Hummer H3 vehicles (US, public record).

Where owners report problems

electrical system
76
engine
44
visibility/wiper
24
structure
21
visibility
20

Recalls affecting the 2007 H3

visibility:defroster/defogger/hvac system:fan/motor

Campaign 15V421000

General Motors LLC (GM) is recalling certain model year 2006-2010 Hummer H3 vehicles manufactured February 5, 2005, to May 24, 2010, and 2009-2010 Hummer H3T vehicles manufactured May 21, 2008, to May 24, 2010. In the af…

structure:body:hood

Campaign 10V179000

GM IS RECALLING CERTAIN MODEL YEAR 2006 THROUGH 2010 HUMMER H3 VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE INTEGRAL CLIP-TABS ON THE LOUVER ON THE HOOD MAY FRACTURE, CAUSING THE HOOD LOUVER RATTLE AGAI…

What owners say across generations

Mixed sentiment with a clear divide between appreciation for its off-road capability and criticism of its on-road performance, reliability, and value.

  • Underpowered 3.7L inline-5 cylinder engine: described as sluggish, struggling with highway merging and towing, "feels like it belongs in a lawn tractor". Frequency: very frequent.
  • Transmission reliability concerns: automatic transmissions (particularly the 4-speed) noted as a weak point not expected to last beyond 200,000 miles; specific mention of failures linked to owner misuse (shifting while moving). Frequency: recurrent.

Owner insights cover all generations of the H3. See the full H3 owner picture and every model year.

Other H3 model years

Compare every H3 year side by side to see how 2007 ranks against the rest.

2008 H32006 H3

Compare the H3 against its rivals

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Full Hummer H3 owner reportCompare against another car