2007 GMC Sierra vs. 2008 Hummer H3
To start off, 2008 Hummer H3 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2007 GMC Sierra would be higher. At 5,357 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 204 kg more than 2008 Hummer H3.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2007 GMC Sierra (458 Nm @ 4400 RPM) has 130 more torque (in Nm) than 2008 Hummer H3. (328 Nm @ 4600 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2008 Hummer H3.
Compare all specifications:
| 2007 GMC Sierra | 2008 Hummer H3 | |
| Make | GMC | Hummer |
| Model | Sierra | H3 |
| Year Released | 2007 | 2008 |
| Body Type | Pickup | SUV |
| Engine Position | Front | Front |
| Engine Size | 5357 cc | 3653 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 315 HP | 0 HP |
| Torque | 458 Nm | 328 Nm |
| Torque RPM | 4400 RPM | 4600 RPM |
| Engine Compression Ratio | 9.4:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 2435 kg | 2231 kg |
| Vehicle Length | 6320 mm | 5180 mm |
| Vehicle Height | 1880 mm | 2020 mm |
| Wheelbase Size | 4010 mm | 2850 mm |
| Fuel Consumption Overall | 13.1 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 129 L | 87 L |
