2008 Hummer H3
The Verdict
Worst problem area
Electrical
Electrical leads by volume: 34 of 113 complaints (30%) mention it. Complaints mentioning Airbags & Restraints include more reported injuries (5) than those mentioning any other identified area.
Complaints filed fell from 237 in 2007 to 113 in 2008.
Data last changed . Sources: NHTSA complaints and recalls, EPA fuel economy data. Methodology
Cost, Fuel Economy & Complaint History
| Category | 2006 | 2007 | 2008 | 2009 | 2010 | vs. 2008 Sport Utility Vehicle - 4WD |
|---|---|---|---|---|---|---|
| Annual fuel cost ($) | 3,900 | 4,150 | 4,150–4,450 | 3,900–4,450 | 3,900–4,450 | |
| Combined MPG | 16 | 15 | 14–15 | 14–16 | 14–16 | |
| City / Highway MPG | 14 / 18 | 14 / 18 | 13–14 / 16–18 | 13–14 / 16–18 | 13–14 / 16–18 | |
| CO₂ tailpipe (g/mi) | 555 | 592 | 592–635 | 555–635 | 555–635 | |
| Complaints filed | 361 | 237 | 113 | 69 | 7 | |
| Recalls issued | 4 | 2 | 2 | 2 | 2 | |
| Crash-involved complaints | 10 | 12 | 3 | 2 | 0 | |
| Fire-involved complaints | 27 | 18 | 6 | 5 | 1 | |
| Injuries reported | 8 | 19 | 5 | 4 | 0 | |
| Deaths reported | 1 | 0 | 0 | 0 | 0 | |
| Configurations compared | 2 | 2 | 3 | 3 | 3 |
Not compared: this database has no vehicle sales or registration figures, so a raw count mostly reflects how many were sold, not how safe the vehicle is.
Common questions
How many recalls does the 2008 Hummer H3 have?
2 NHTSA recall campaigns as of Sep 16, 2026. Check your VIN with NHTSA to see whether one applies to your car.
What is the most common complaint about the 2008 Hummer H3?
Electrical: 34 of 113 NHTSA complaints (30%) mention it.
What gas mileage does the 2008 Hummer H3 get?
EPA rates it 14–15 MPG combined across 3 configurations.
How much does it cost to fuel a 2008 Hummer H3?
EPA estimates $4,150–$4,450 a year in fuel costs, using EPA's assumptions.
Similar Vehicles
EPA-Rated Configurations (3)
| Configuration | Transmission | Cylinders | Displacement | Drivetrain | Fuel Type | Vehicle Class | City | Highway | Combined | Annual Fuel Cost | CO₂ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Configuration 1 | Automatic 4-spd | 5 | 3.7L | 4-Wheel or All-Wheel Drive | Regular | Sport Utility Vehicle - 4WD | 14 mpg (high) | 18 mpg (high) | 15 mpg (high) | $4,150 (low) | 592 g/mi (low) |
| Configuration 2 | Manual 5-spd | 5 | 3.7L | 4-Wheel or All-Wheel Drive | Regular | Sport Utility Vehicle - 4WD | 13 mpg (low) | 18 mpg (high) | 15 mpg (high) | $4,150 (low) | 592 g/mi (low) |
| Configuration 3 | Automatic 4-spd | 8 | 5.3L | 4-Wheel or All-Wheel Drive | Regular | Sport Utility Vehicle - 4WD | 13 mpg (low) | 16 mpg (low) | 14 mpg (low) | $4,450 (high) | 635 g/mi (high) |
Complaints by Category
| Category | Complaints | Crash-Involved | Fire-Involved | Injuries | Deaths |
|---|---|---|---|---|---|
| Engine | 22 | 0 | 0 | 0 | 0 |
| Transmission & Drivetrain | 1 | 0 | 0 | 0 | 0 |
| Fuel System | 4 | 0 | 0 | 0 | 0 |
| Electrical | 34 | 1 | 4 | 0 | 0 |
| Brakes | 5 | 0 | 0 | 0 | 0 |
| Steering | 5 | 1 | 0 | 0 | 0 |
| Suspension, Wheels & Tires | 6 | 1 | 0 | 0 | 0 |
| Airbags & Restraints | 17 | 1 | 0 | 5 | 0 |
| Driver Assistance & Speed Control | 1 | 0 | 0 | 0 | 0 |
| Body, Seats & Latches | 10 | 0 | 0 | 0 | 0 |
| Visibility & Lighting | 30 | 0 | 1 | 0 | 0 |
| Other | 12 | 0 | 3 | 0 | 0 |
A complaint that names more than one category is counted in each, so the rows can add up to more than the total number of complaints.
Recalls (2)
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR · Campaign 15V421000 · Jul 1, 2015
Defect: 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 affected vehicles, the connector module that controls the blower motor speed for the heating, ventilation and air conditioning system may overheat.
Consequence: If the blower motor connector module overheats, it can increase the risk of a fire.
Remedy: GM will notify owners, and dealers will replace part of the blower motor connector and harness, free of charge. The recall began February 26, 2016. Owners may contact Hummer customer service at 1-800-732-5493. GM's number for this recall is 15042.
STRUCTURE:BODY:HOOD · Campaign 10V179000 · Apr 30, 2010
Defect: 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 AGAINST THE HOOD AND BECOME LOOSE. IF THIS INDICATOR IS UNNOTICED, ADDITIONAL CLIPS COULD FRACTURE AND THE HOOD LOUVER COULD DETACH FROM THE VEHICLE.
Consequence: IF THE VEHICLE IS BEING DRIVING WHEN THIS OCCURS, IT COULD STRIKE A FOLLOWING VEHICLE AND CAUSE INJURY AND/OR PROPERTY DAMAGE.
Remedy: DEALERS WILL APPLY AN ADHESIVE TO THE HOOD LOUVER TO SECURE IT TO THE HOOD. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON APRIL 12, 2010. OWNERS MAY CONTACT HUMMER AT 800-732-5493 OR AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.