2005 Audi A6 vs. 2007 BMW 550
To start off, 2007 BMW 550 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi A6. In addition, the cost of maintenance, including insurance, on 2005 Audi A6 would be higher. At 4,797 cc, 2007 BMW 550 is equipped with a bigger engine. In terms of performance, 2007 BMW 550 (657 HP @ 3400 RPM) has 479 more horse power than 2005 Audi A6. (178 HP @ 6000 RPM) In normal driving conditions, 2007 BMW 550 should accelerate faster than 2005 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 550 weights approximately 105 kg more than 2005 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW 550 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 2007 BMW 550. However, in wet, icy, snow, or gravel driving conditions, 2005 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, 2007 BMW 550 (490 Nm @ 3400 RPM) has 260 more torque (in Nm) than 2005 Audi A6. (230 Nm @ 3000 RPM). This means 2007 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
Compare all specifications:
| 2005 Audi A6 | 2007 BMW 550 | |
| Make | Audi | BMW |
| Model | A6 | 550 |
| Year Released | 2005 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 4797 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 178 HP | 657 HP |
| Engine RPM | 6000 RPM | 3400 RPM |
| Torque | 230 Nm | 490 Nm |
| Torque RPM | 3000 RPM | 3400 RPM |
| Engine Compression Ratio | 10.3:1 | 10.5:1 |
| Acceleration 0-100mph | 9.2 seconds | 5.6 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1555 kg | 1660 kg |
| Vehicle Length | 4920 mm | 4850 mm |
| Vehicle Width | 1860 mm | 1470 mm |
| Vehicle Height | 1470 mm | 1850 mm |
| Wheelbase Size | 2850 mm | 2890 mm |
| Fuel Consumption Overall | 9.8 L/100km | 10.8 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
