2009 Audi Q7 vs. 2003 BMW 520
To start off, 2009 Audi Q7 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 BMW 520. In addition, the cost of maintenance, including insurance, on 2003 BMW 520 would be higher. At 4,133 cc (8 cylinders), 2009 Audi Q7 is equipped with a bigger engine. In terms of performance, 2009 Audi Q7 (322 HP @ 3750 RPM) has 155 more horse power than 2003 BMW 520. (167 HP @ 6100 RPM). In normal driving conditions, 2009 Audi Q7 should accelerate faster than 2003 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 750 kg more than 2003 BMW 520. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi Q7 is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 520. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi Q7 (760 Nm @ 2500 RPM) has 550 more torque (in Nm) than 2003 BMW 520. (210 Nm @ 3500 RPM). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 520. 2009 Audi Q7 has automatic transmission and 2003 BMW 520 has manual transmission. 2003 BMW 520 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi Q7 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi Q7 | 2003 BMW 520 | |
| Make | Audi | BMW |
| Model | Q7 | 520 |
| Year Released | 2009 | 2003 |
| Body Type | SUV | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4133 cc | 2170 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 167 HP |
| Engine RPM | 3750 RPM | 6100 RPM |
| Torque | 760 Nm | 210 Nm |
| Torque RPM | 2500 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 80 mm |
| Engine Stroke Size | 95.5 mm | 72 mm |
| Engine Compression Ratio | 16.5:1 | 10.7:1 |
| Top Speed | 236 km/hour | 223 km/hour |
| Acceleration 0-100mph | 6.4 seconds | 9.5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 2420 kg | 1670 kg |
| Vehicle Length | 5090 mm | 4810 mm |
| Vehicle Width | 2090 mm | 1810 mm |
| Vehicle Height | 1780 mm | 1450 mm |
| Wheelbase Size | 3010 mm | 2890 mm |
| Fuel Consumption Overall | 11.1 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 100 L | 70 L |
