2004 Audi A6 vs. 2008 BMW 650
To start off, 2008 BMW 650 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 Audi A6. In addition, the cost of maintenance, including insurance, on 2004 Audi A6 would be higher. At 4,799 cc (8 cylinders), 2008 BMW 650 is equipped with a bigger engine. In terms of performance, 2008 BMW 650 (360 HP @ 6300 RPM) has 180 more horse power than 2004 Audi A6. (180 HP @ 6000 RPM) In normal driving conditions, 2008 BMW 650 should accelerate faster than 2004 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A6 weights approximately 22 kg more than 2008 BMW 650.
Because 2008 BMW 650 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 2008 BMW 650. However, in wet, icy, snow, or gravel driving conditions, 2004 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, 2008 BMW 650 (490 Nm @ 3400 RPM) has 255 more torque (in Nm) than 2004 Audi A6. (235 Nm @ 3000 RPM). This means 2008 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A6.
Compare all specifications:
| 2004 Audi A6 | 2008 BMW 650 | |
| Make | Audi | BMW |
| Model | A6 | 650 |
| Year Released | 2004 | 2008 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 4799 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 180 HP | 360 HP |
| Engine RPM | 6000 RPM | 6300 RPM |
| Torque | 235 Nm | 490 Nm |
| Torque RPM | 3000 RPM | 3400 RPM |
| Engine Bore Size | 81 mm | 92.1 mm |
| Engine Stroke Size | 77.4 mm | 82.7 mm |
| Acceleration 0-100mph | 9.5 seconds | 5.5 seconds |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1662 kg | 1640 kg |
| Vehicle Length | 4940 mm | 4830 mm |
| Vehicle Width | 1860 mm | 1380 mm |
| Vehicle Height | 1470 mm | 1860 mm |
| Wheelbase Size | 2660 mm | 2790 mm |
| Fuel Consumption | 7.2 L/100km | 10.2 L/100km |
| Fuel Consumption City | 13.8 L/100km | 14.7 L/100km |
| Fuel Consumption Overall | 9.6 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
