2006 Audi Q7 vs. 2004 BMW 645
To start off, 2006 Audi Q7 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 BMW 645. In addition, the cost of maintenance, including insurance, on 2004 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 52 more horse power than 2006 Audi Q7. (276 HP @ 6200 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 2006 Audi Q7. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi Q7 weights approximately 429 kg more than 2004 BMW 645.
Because 2006 Audi Q7 is four wheel drive (4WD), it will have significant more traction and grip than 2004 BMW 645. In wet, icy, snow, or gravel driving conditions, 2006 Audi Q7 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, 2004 BMW 645 (451 Nm @ 3600 RPM) has 91 more torque (in Nm) than 2006 Audi Q7. (360 Nm @ 2500 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi Q7.
Compare all specifications:
| 2006 Audi Q7 | 2004 BMW 645 | |
| Make | Audi | BMW |
| Model | Q7 | 645 |
| Year Released | 2006 | 2004 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3597 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 276 HP | 328 HP |
| Engine RPM | 6200 RPM | 6100 RPM |
| Torque | 360 Nm | 451 Nm |
| Torque RPM | 2500 RPM | 3600 RPM |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 220 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 6.1 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 7 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2244 kg | 1815 kg |
| Vehicle Length | 5090 mm | 4830 mm |
| Vehicle Width | 1990 mm | 1860 mm |
| Vehicle Height | 1740 mm | 1380 mm |
| Wheelbase Size | 3010 mm | 2790 mm |
| Fuel Consumption Overall | 13 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 100 L | 70 L |
