2005 GMC Sierra vs. 2008 Hummer H3
To start off, 2008 Hummer H3 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2005 GMC Sierra would be higher. At 5,965 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 2005 GMC Sierra (321 HP @ 5000 RPM) has 21 more horse power than 2008 Hummer H3. (300 HP @ 5200 RPM). In normal driving conditions, 2005 GMC Sierra should accelerate faster 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, 2008 Hummer H3 (434 Nm @ 4000 RPM) has 64 more torque (in Nm) than 2005 GMC Sierra. (370 Nm @ 4000 RPM). This means 2008 Hummer H3 will have an easier job in driving up hills or pulling heavy equipment than 2005 GMC Sierra.
Compare all specifications:
| 2005 GMC Sierra | 2008 Hummer H3 | |
| Make | GMC | Hummer |
| Model | Sierra | H3 |
| Year Released | 2005 | 2008 |
| Body Type | Pickup | SUV |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 5328 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 321 HP | 300 HP |
| Engine RPM | 5000 RPM | 5200 RPM |
| Torque | 370 Nm | 434 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5790 mm | 4750 mm |
| Vehicle Width | 2000 mm | 2180 mm |
| Vehicle Height | 1850 mm | 1900 mm |
| Wheelbase Size | 3650 mm | 2850 mm |
| Fuel Tank Capacity | 117 L | 87 L |
