2008 Hummer H3 vs. 2007 BMW 645
To start off, 2008 Hummer H3 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 BMW 645. In addition, the cost of maintenance, including insurance, on 2007 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2008 Hummer H3 weights approximately 416 kg more than 2007 BMW 645.
Because 2008 Hummer H3 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 645. 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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 122 more torque (in Nm) than 2008 Hummer H3. (328 Nm @ 4600 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2008 Hummer H3.
Compare all specifications:
| 2008 Hummer H3 | 2007 BMW 645 | |
| Make | Hummer | BMW |
| Model | H3 | 645 |
| Year Released | 2008 | 2007 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3653 cc | 4398 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 0 HP | 328 HP |
| Torque | 328 Nm | 450 Nm |
| Torque RPM | 4600 RPM | 3600 RPM |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2231 kg | 1815 kg |
| Vehicle Length | 5180 mm | 4830 mm |
| Vehicle Height | 2020 mm | 1380 mm |
| Wheelbase Size | 2850 mm | 2790 mm |
| Fuel Consumption Overall | 15.7 L/100km | 13 L/100km |
| Fuel Tank Capacity | 87 L | 70 L |
