2005 Audi S6 vs. 2011 BMW 520
To start off, 2011 BMW 520 is newer by 6 year(s). Which means there will be less support and parts availability for 2005 Audi S6. In addition, the cost of maintenance, including insurance, on 2005 Audi S6 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S6 is equipped with a bigger engine. In terms of performance, 2005 Audi S6 (335 HP @ 7000 RPM) has 153 more horse power than 2011 BMW 520. (182 HP @ 5000 RPM). In normal driving conditions, 2005 Audi S6 should accelerate faster than 2011 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW 520 weights approximately 30 kg more than 2005 Audi S6.
Because 2005 Audi S6 is four wheel drive (4WD), it will have significant more traction and grip than 2011 BMW 520. In wet, icy, snow, or gravel driving conditions, 2005 Audi S6 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, 2005 Audi S6 (420 Nm @ 3400 RPM) has 150 more torque (in Nm) than 2011 BMW 520. (270 Nm @ 4500 RPM). This means 2005 Audi S6 will have an easier job in driving up hills or pulling heavy equipment than 2011 BMW 520.
Compare all specifications:
| 2005 Audi S6 | 2011 BMW 520 | |
| Make | Audi | BMW |
| Model | S6 | 520 |
| Year Released | 2005 | 2011 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 1997 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 335 HP | 182 HP |
| Engine RPM | 7000 RPM | 5000 RPM |
| Torque | 420 Nm | 270 Nm |
| Torque RPM | 3400 RPM | 4500 RPM |
| Engine Bore Size | 84.5 mm | 90.1 mm |
| Engine Stroke Size | 93 mm | 84 mm |
| Top Speed | 250 km/hour | 220 km/hour |
| Acceleration 0-100mph | 6.7 seconds | 8.4 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1760 kg | 1790 kg |
| Wheelbase Size | 2770 mm | 2968 mm |
| Fuel Tank Capacity | 82 L | 70 L |
