Independent · Not affiliated with NHTSA or any automaker MethodologyData sourcesData refreshed Oct 6, 2026

2007 Hummer H3: Problems, Recalls and MPG

What this means

NHTSA lists 2 recall campaigns for the 2007 Hummer H3, most recently filed July 2015. Owners have filed 237 complaints with NHTSA, most often about the electrical system.

Data summary generated from official records. Methodology Data: NHTSA, DOT, EPA · Refreshed Oct 6, 2026
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Recalls (2)

NHTSA lists 2 recall campaigns for the 2007 Hummer H3. Check whether yours was repaired with NHTSA's free VIN lookup ↗

Only NHTSA and your automaker know whether your specific car was repaired. PlainVIN shows every recall campaign listed for a model year, with the official text and how many cars have been fixed so far.

Check on NHTSA ↗
Listed for 2007 Hummer H3. Not checked against your VIN.
Recall 15V421000 Filed Jul 1, 2015

Blower Motor Connector may Overheat

Visibility · defroster/defogger/hvac system · fan/motor
Official NHTSA text
Summary
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.
52% repairedof 164,993 vehicles
Manufacturer report to NHTSA · Source: US DOT recall completion data, retrieved Oct 6, 2026
Check your VIN on NHTSA or ask a dealer to check campaign 15V421000
Listed for 2007 Hummer H3. Not checked against your VIN.
Recall 10V179000 Filed Apr 30, 2010

HOOD LOUVER SEPARATION

Structure · body · hood
Official NHTSA text
Summary
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.
Repair progress not yet reported162,129 vehicles potentially affected
Manufacturer report to NHTSA · Source: US DOT recall completion data, retrieved Oct 6, 2026
Check your VIN on NHTSA or ask a dealer to check campaign 10V179000

PlainVIN shows public government records for education. It isn't a vehicle inspection or legal advice. Check your own VIN with NHTSA or your dealer.

Owner complaints (237)

237 complaints filed with NHTSA (owner reports, not verified findings). The electrical system is mentioned most often.

12involved a crash
18involved a fire
19injuries reported
0deaths reported

As reported by owners in their complaints. These are reports, not NHTSA findings.

Most-reported components

Complaints filed with NHTSA for the 2007 Hummer H3, by component (top 10). One complaint can list several components, so these add up to more than 237.Source: NHTSA ODI owner complaints · Retrieved Oct 6, 2026 · Report a data error

How 2007 compares with other H3 years

Best and worst H3 years →
200320062007200820092010
This year (2007)Other yearsStill collecting reports

Counts are owner reports, not failure rates. Higher sales years tend to draw more reports. Owners are still filing reports for recent model years, so these counts will grow. Source: NHTSA ODI, retrieved Oct 6, 2026.

Fuel economy: up to 15 mpg combined

15
mpg combined
14
city
18
highway
EPA annual fuel cost
$4,450
CO₂ tailpipe
593 g/mi
EPA class
Sport Utility Vehicle -

What it costs you to run

$4,354per year
$363per month
1,000gallons a year

Miles ÷ 15 mpg × $4.354 (EIA US average regular, week of Oct 5, 2026, all taxes included). Source: EPA · EIA.

EPA label estimates from lab tests; your mileage will vary.

Specs by configuration

2007 Hummer H3 configurations with EPA data
Engine · transmissionDriveCity / Hwy / CombEPA $/yrCO₂ g/mi
3.7 L 5-cyl · 4-speed automatic4-Wheel or All-Wheel Drive14 / 18 / 15$4,450593
3.7 L 5-cyl · 5-speed manual4-Wheel or All-Wheel Drive14 / 18 / 15$4,450593

Source: EPA fuel economy data, retrieved Oct 6, 2026. Configurations are listed when EPA and NHTSA records match.

Used blue SUV on a sunny dealer lot with its hood open and a clipboard on the fender

Looking at a 2007 H3 for sale?

Print a one-page buyer's checklist: each recall campaign with a box to tick when the seller shows proof of repair, the top complaint areas to inspect, crash stars, MPG, and a link back to this page.

All H3 years

Where to next

2007 Hummer H3 FAQ

How many recalls does the 2007 Hummer H3 have?

NHTSA lists 2 recall campaigns: 15V421000 (visibility), 10V179000 (structure). Use NHTSA's VIN lookup to see whether a specific car was repaired.

What are the most common 2007 Hummer H3 problems?

Owners filed 237 complaints with NHTSA. Electrical system (76), Engine (44), Unknown or other (25) are mentioned most. These are owner reports, not verified findings.

What mpg does the 2007 Hummer H3 get?

EPA rates the 3.7 L 5-cyl · 4-speed automatic version at 14 city, 18 highway and 15 combined mpg. Other configurations are listed in the fuel economy section.

How does the 2007 H3 compare with other years?

Among the 2003–2010 Hummer H3 model years at least five years old, the 2003 drew the fewest complaints (2) and the 2006 the most (361). The 2007 drew 237. Counts are owner reports, not failure rates.

How this page was madeSources, processing, limits, review and changes

Processing

  • Complaints are counted per component. One complaint can list several, so component totals add up to more than the total.
  • Fuel cost = miles per year ÷ EPA combined mpg × EIA weekly price for your region.

Limitations

  • Complaint counts are owner reports, not verified findings or failure rates. There is no sales denominator.
  • Recall campaigns are listed for the model year. Only NHTSA and the automaker know whether a specific car was repaired.
  • Recent model years are still collecting reports.

Review

Data compiled automatically from the official files listed here.

Changelog

  • 2026-10-06 Data refreshed from the official files.
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