Vehicle Data Hub

2007 Hummer H3 engine problems

Owners reported engine problems in 55 complaints for the 2007 Hummer H3, 16% of the complaints on file. It is the 2nd most reported problem area for this model year.

At a glance

Complaints
55 16% of this year's complaints
Typical mileage
72,000 miles 52 complaints with mileage
Crashes and fires
1 and 3
Injuries and deaths
0 and 0

Source: NHTSA owner complaints

When engine problems show up

Engine complaints by mileage, 2007 Hummer H3 Complaints by odometer reading in 20,000-mile steps. The median is about 72,000 miles. 0k to 20k miles: 3 complaints 20k to 40k miles: 3 complaints 40k to 60k miles: 9 complaints 60k to 80k miles: 15 complaints 80k to 100k miles: 5 complaints 100k to 120k miles: 5 complaints 120k to 140k miles: 5 complaints 140k to 160k miles: 2 complaints 160k to 180k miles: 4 complaints 180k to 200k miles: 1 complaints 200k+ miles: 0 complaints 040k80k120k160k200k miles Typical: 72,000 miles
Based on 52 complaints that include mileage. 29% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles3
20k to 40k miles3
40k to 60k miles9
60k to 80k miles15
80k to 100k miles5
100k to 120k miles5
120k to 140k miles5
140k to 160k miles2
160k to 180k miles4
180k to 200k miles1
200k+ miles0

What the data shows

Of the 52 engine complaints that report mileage, the median is about 72,000 miles, and 29% were reported before 60,000 miles.

These complaints mention 1 crash, 3 fires.

What owners wrote

I had dropped my daughter off at school then went to the gas station and I smelled something like it was burning and I thought it was out side. When I came out of the gas station there was smoke rolling out of my hummer . I had jumped in and moved the vehicle away from the pumps so they would not blow up and hurt the patrons around us. The fire dept came and so did the police. They told me that the blow had started from behind the glove compartment and was on fire.

Reported at 17,000 miles, March 2009 Fire

Smelled radiator fluent when I parked into the drive way, popped the hood and saw that the liquid splashed all over the engine and parts as well as on top of the plastic fan cover, which seemed odd. Couldn't find the leak in the hose. Looked at the hummer forum that I'm a member of and lord behold there was a big topic of radiators cracking and breaking in the same places with the 2007 models. No recall has been issued, so no recall has been submitted.

Reported at 77,540 miles, February 2014

Other problems reported for the 2007 Hummer H3

Engine problems in other years