2005 Audi S6 vs. 2006 BMW 545
To start off, 2006 BMW 545 is newer by 1 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 4,396 cc (8 cylinders), 2006 BMW 545 is equipped with a bigger engine. In terms of performance, 2005 Audi S6 (335 HP @ 7000 RPM) has 7 more horse power than 2006 BMW 545. (328 HP @ 6100 RPM). In normal driving conditions, 2005 Audi S6 should accelerate faster than 2006 BMW 545. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 545 weights approximately 20 kg more than 2005 Audi S6.
Because 2005 Audi S6 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW 545. 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, 2006 BMW 545 (450 Nm @ 3600 RPM) has 30 more torque (in Nm) than 2005 Audi S6. (420 Nm @ 3400 RPM). This means 2006 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S6.
Compare all specifications:
| 2005 Audi S6 | 2006 BMW 545 | |
| Make | Audi | BMW |
| Model | S6 | 545 |
| Year Released | 2005 | 2006 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 4396 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 335 HP | 328 HP |
| Engine RPM | 7000 RPM | 6100 RPM |
| Torque | 420 Nm | 450 Nm |
| Torque RPM | 3400 RPM | 3600 RPM |
| Engine Bore Size | 84.5 mm | 92 mm |
| Engine Stroke Size | 93 mm | 83 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 5.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1835 kg |
| Vehicle Length | 4840 mm | 4850 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1450 mm | 1380 mm |
| Wheelbase Size | 2660 mm | 2890 mm |
| Fuel Consumption Overall | 14.5 L/100km | 10.6 L/100km |
| Fuel Tank Capacity | 82 L | 70 L |
