2006 GMC Sierra vs. 2008 Hummer H3
To start off, 2008 Hummer H3 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2006 GMC Sierra would be higher. At 5,328 cc (8 cylinders), 2008 Hummer H3 is equipped with a bigger engine. In terms of performance, 2008 Hummer H3 (300 HP @ 5200 RPM) has 15 more horse power than 2006 GMC Sierra. (285 HP @ 5200 RPM) In normal driving conditions, 2008 Hummer H3 should accelerate faster than 2006 GMC Sierra.
Because 2008 Hummer H3 is four wheel drive (4WD), it will have significant more traction and grip than 2006 GMC Sierra. In wet, icy, snow, or gravel driving conditions, 2008 Hummer H3 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2008 Hummer H3 (434 Nm @ 4000 RPM) has 34 more torque (in Nm) than 2006 GMC Sierra. (400 Nm @ 4000 RPM). This means 2008 Hummer H3 will have an easier job in driving up hills or pulling heavy equipment than 2006 GMC Sierra.
Compare all specifications:
| 2006 GMC Sierra | 2008 Hummer H3 | |
| Make | GMC | Hummer |
| Model | Sierra | H3 |
| Year Released | 2006 | 2008 |
| Body Type | Pickup | SUV |
| Engine Position | Front | Front |
| Engine Size | 4802 cc | 5328 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 285 HP | 300 HP |
| Engine RPM | 5200 RPM | 5200 RPM |
| Torque | 400 Nm | 434 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Drive Type | Rear | 4WD |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5850 mm | 4750 mm |
| Vehicle Width | 2000 mm | 2180 mm |
| Vehicle Height | 1850 mm | 1900 mm |
| Wheelbase Size | 3650 mm | 2850 mm |
| Fuel Tank Capacity | 98 L | 87 L |
