2004 GMC Sierra vs. 2008 Hummer H2
To start off, 2008 Hummer H2 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2004 GMC Sierra would be higher. At 6,162 cc (8 cylinders), 2008 Hummer H2 is equipped with a bigger engine. In terms of performance, 2008 Hummer H2 (393 HP) has 68 more horse power than 2004 GMC Sierra. (325 HP) In normal driving conditions, 2008 Hummer H2 should accelerate faster than 2004 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2008 Hummer H2 weights approximately 629 kg more than 2004 GMC Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2008 Hummer H2 (563 Nm) has 61 more torque (in Nm) than 2004 GMC Sierra. (502 Nm). This means 2008 Hummer H2 will have an easier job in driving up hills or pulling heavy equipment than 2004 GMC Sierra.
Compare all specifications:
| 2004 GMC Sierra | 2008 Hummer H2 | |
| Make | GMC | Hummer |
| Model | Sierra | H2 |
| Year Released | 2004 | 2008 |
| Body Type | Pickup | SUV |
| Engine Position | Front | Front |
| Engine Size | 5963 cc | 6162 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 325 HP | 393 HP |
| Torque | 502 Nm | 563 Nm |
| Engine Compression Ratio | 9.4:1 | 10.5:1 |
| Drive Type | 4WD | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2274 kg | 2903 kg |
| Vehicle Length | 5790 mm | 5180 mm |
| Vehicle Width | 2130 mm | 2070 mm |
| Vehicle Height | 1880 mm | 2000 mm |
| Wheelbase Size | 3650 mm | 3130 mm |
| Fuel Consumption Overall | 15.7 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 102 L | 121 L |
