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 3,698 cc (6 cylinders), 2008 Audi A6 is equipped with a bigger engine. In terms of performance, 2012 BMW 640 (311 HP @ 4400 RPM) has 134 more horse power than 2008 Audi A6. (177 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. 2012 BMW 640 weights approximately 280 kg more than 2008 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2012 BMW 640 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 2012 BMW 640. However, in wet, icy, snow, or gravel driving conditions, 2008 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, 2012 BMW 640 (630 Nm @ 1500 RPM) has 250 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 | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3698 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 177 HP | 311 HP |
| Engine RPM | 3300 RPM | 4400 RPM |
| Torque | 380 Nm | 630 Nm |
| Torque RPM | 1400 RPM | 1500 RPM |
| Engine Bore Size | 83.1 mm | 90 mm |
| Engine Stroke Size | 83.1 mm | 84 mm |
| Fuel Type | Diesel | Diesel |
| Acceleration 0-100mph | 8.3 seconds | 5.6 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1655 kg | 1935 kg |
| Vehicle Length | 4920 mm | 4894 mm |
| Vehicle Width | 1470 mm | 1894 mm |
| Vehicle Height | 1860 mm | 1365 mm |
| Wheelbase Size | 2850 mm | 2855 mm |
| Fuel Consumption Overall | 7.2 L/100km | 5.5 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
