2003 BMW 645 vs. 2010 Audi Q7
To start off, 2010 Audi Q7 is newer by 7 year(s). Which means there will be less support and parts availability for 2003 BMW 645. In addition, the cost of maintenance, including insurance, on 2003 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (321 HP @ 6100 RPM) has 96 more horse power than 2010 Audi Q7. (225 HP @ 3750 RPM). In normal driving conditions, 2003 BMW 645 should accelerate faster than 2010 Audi Q7. With that said, vehicle weight also plays an important factor in acceleration. 2010 Audi Q7 weights approximately 605 kg more than 2003 BMW 645.
Because 2010 Audi Q7 is all wheel drive (AWD), it will have significant more traction and grip than 2003 BMW 645. In wet, icy, snow, or gravel driving conditions, 2010 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, 2010 Audi Q7 (550 Nm @ 1750 RPM) has 100 more torque (in Nm) than 2003 BMW 645. (450 Nm @ 3600 RPM). This means 2010 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 645.
Compare all specifications:
| 2003 BMW 645 | 2010 Audi Q7 | |
| Make | BMW | Audi |
| Model | 645 | Q7 |
| Year Released | 2003 | 2010 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 3000 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 225 HP |
| Engine RPM | 6100 RPM | 3750 RPM |
| Torque | 450 Nm | 550 Nm |
| Torque RPM | 3600 RPM | 1750 RPM |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1895 kg | 2500 kg |
| Vehicle Length | 4830 mm | 5088 mm |
| Vehicle Width | 1860 mm | 1984 mm |
| Vehicle Height | 1380 mm | 1737 mm |
| Wheelbase Size | 2790 mm | 3002 mm |
| Fuel Consumption | 8.5 L/100km | 9.4 L/100km |
| Fuel Consumption City | 16.8 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 70 L | 100 L |
