2006 Audi A6 vs. 2003 BMW 520
To start off, 2006 Audi A6 is newer by 3 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 3,130 cc (6 cylinders), 2006 Audi A6 is equipped with a bigger engine. In terms of performance, 2006 Audi A6 (255 HP @ 6500 RPM) has 88 more horse power than 2003 BMW 520. (167 HP @ 6100 RPM). In normal driving conditions, 2006 Audi A6 should accelerate faster than 2003 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 520 weights approximately 160 kg more than 2006 Audi A6.
Because 2003 BMW 520 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2003 BMW 520. However, in wet, icy, snow, or gravel driving conditions, 2006 Audi A6, being front wheel drive (FWD), will offer much better control with better grip. 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, 2006 Audi A6 (330 Nm @ 3250 RPM) has 120 more torque (in Nm) than 2003 BMW 520. (210 Nm @ 3500 RPM). This means 2006 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 520.
Compare all specifications:
| 2006 Audi A6 | 2003 BMW 520 | |
| Make | Audi | BMW |
| Model | A6 | 520 |
| Year Released | 2006 | 2003 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3130 cc | 2170 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 255 HP | 167 HP |
| Engine RPM | 6500 RPM | 6100 RPM |
| Torque | 330 Nm | 210 Nm |
| Torque RPM | 3250 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 80 mm |
| Engine Stroke Size | 92.8 mm | 72 mm |
| Engine Compression Ratio | 13.0:1 | 10.7:1 |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1510 kg | 1670 kg |
| Vehicle Length | 4920 mm | 4810 mm |
| Vehicle Width | 2020 mm | 1810 mm |
| Vehicle Height | 1470 mm | 1450 mm |
| Wheelbase Size | 2850 mm | 2890 mm |
| Fuel Consumption Highway | 8.7 L/100km | 7.5 L/100km |
| Fuel Consumption City | 12.4 L/100km | 12.8 L/100km |
| Fuel Consumption Overall | 10.7 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 80 L | 70 L |
