2006 Hummer H3 MPG
16 mpg combined across 2 EPA-rated versions. Best: H3 4WD (4WD/AWD, 3.5L 5-cyl) at 14 city / 18 hwy / 16 combined.
Every version
| Version | Engine | Trans. | Drive | City | Hwy | Comb | Fuel cost / yr |
|---|---|---|---|---|---|---|---|
| H3 4WD | 3.5L 5-cyl | A4 | 4WD/AWD | 14 | 18 | 16 | $4,200 |
| H3 4WD | 3.5L 5-cyl | M5 | 4WD/AWD | 14 | 18 | 16 | $4,200 |
How it compares
- 2006 Sport Utility Vehicle - 4WD: class average 17 mpg over 165 versions; best H3 −1.0 (#79).
- 2007: 15 mpg best.
- 2010 model: 16 mpg best (no change).
Safety
362 owner complaints: Electrical System 96, Engine 52, Structure 36, Engine And Engine Cooling 35. Crashes 10, fires 27, injuries 8, deaths 1.
| Complaint area | Reports | Share |
|---|---|---|
| Electrical System | 96 | 27% |
| Engine | 52 | 14% |
| Structure | 36 | 10% |
| Engine And Engine Cooling | 35 | 10% |
| Visibility | 32 | 9% |
| Suspension | 29 | 8% |
| Visibility/Wiper | 29 | 8% |
| Unknown Or Other | 28 | 8% |
Recent owner reports: Electrical System
“Theses templates dosent recognize the key and kicks on the security system which stops the motor from turning on. So you are stuck for 10 minutes then you can try again all so sometimes the motor tries to turn on by just sticking the key in the ignition before you even turn it. By looking at youtube alot of the H3s and the Colorados do this”
“On the electrical, I refer to my air conditioning and heater. When I have my air selection to coldest and I drop 1 click for it to be less cool, my heater turns on and at times it smells like something burning. I have to turn it off . On the engine, after I hit 90,000 miles, I have to fill up my engine oil every 2-3 weeks because my vehicle is burning it quick or something. It doesn't leak oil at all.”
“THE H3 WILL NOT START. DASH SCREEN KEEPS SHOWING THE PASSLOCK ACTIVATED AND WON'T TURN OFF. COMPUTER THINKS THE H3 IS BEING STOLEN. I HAVE TRIED TO RESET AND NO LUCK. I HAD THIS PROBLEM ABOUT 4 WEEKS AGO AND CHANGED THE FUEL PUMP. THEN IT HAPPENED AGAIN LAST WEEK AND NOW ON 28 MARCH 2020. ENGINE IS TURNING OVER AND ELECTRICAL SYSTEMS LIGHT UP, BUT SOUNDS LIKE FUEL IS NOT GETTING INTO THE FUEL PUMP AGAIN.”
Owner reports are unverified and filed directly with NHTSA.
Recalls
4 NHTSA campaigns (check a VIN).