2008 Audi A6 vs. 2012 BMW 640
To start off, 2012 BMW 640 is newer by 4 year(s). Which means there will be less support and parts availability for 2008 Audi A6. In addition, the cost of maintenance, including insurance, on 2008 Audi A6 would be higher. At 2,979 cc (6 cylinders), 2012 BMW 640 is equipped with a bigger engine. In terms of performance, 2012 BMW 640 (318 HP @ 5800 RPM) has 140 more horse power than 2008 Audi A6. (178 HP @ 3300 RPM) In normal driving conditions, 2012 BMW 640 should accelerate faster than 2008 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A6 weights approximately 50 kg more than 2012 BMW 640.
Because 2008 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2012 BMW 640. In wet, icy, snow, or gravel driving conditions, 2008 Audi A6 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, 2012 BMW 640 (450 Nm @ 1300 RPM) has 70 more torque (in Nm) than 2008 Audi A6. (380 Nm @ 1400 RPM). This means 2012 BMW 640 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A6.
Compare all specifications:
| 2008 Audi A6 | 2012 BMW 640 | |
| Make | Audi | BMW |
| Model | A6 | 640 |
| Year Released | 2008 | 2012 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2698 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 178 HP | 318 HP |
| Engine RPM | 3300 RPM | 5800 RPM |
| Torque | 380 Nm | 450 Nm |
| Torque RPM | 1400 RPM | 1300 RPM |
| Engine Bore Size | 83 mm | 89.6 mm |
| Engine Stroke Size | 83.1 mm | 84 mm |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 215 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.6 seconds | 5.4 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1875 kg | 1825 kg |
| Vehicle Length | 4940 mm | 5007 mm |
| Vehicle Width | 1870 mm | 1894 mm |
| Vehicle Height | 1530 mm | 1392 mm |
| Wheelbase Size | 2840 mm | 2968 mm |
| Fuel Consumption Overall | 8.7 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 80 L | 70 L |
