2005 Audi A8 vs. 2012 BMW 640
To start off, 2012 BMW 640 is newer by 7 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 would be higher. At 5,998 cc, 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (444 HP @ 6200 RPM) has 133 more horse power than 2012 BMW 640. (311 HP @ 4400 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2012 BMW 640. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 60 kg more than 2012 BMW 640. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi A8 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, 2005 Audi A8 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 (630 Nm @ 1500 RPM) has 50 more torque (in Nm) than 2005 Audi A8. (580 Nm @ 4000 RPM). This means 2012 BMW 640 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A8.
Compare all specifications:
| 2005 Audi A8 | 2012 BMW 640 | |
| Make | Audi | BMW |
| Model | A8 | 640 |
| Year Released | 2005 | 2012 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 2993 cc |
| Engine Type | W | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 444 HP | 311 HP |
| Engine RPM | 6200 RPM | 4400 RPM |
| Torque | 580 Nm | 630 Nm |
| Torque RPM | 4000 RPM | 1500 RPM |
| Engine Bore Size | 84 mm | 90 mm |
| Engine Stroke Size | 90.2 mm | 84 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.4 seconds | 5.6 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1995 kg | 1935 kg |
| Vehicle Length | 5070 mm | 4894 mm |
| Vehicle Width | 1900 mm | 1894 mm |
| Vehicle Height | 1450 mm | 1365 mm |
| Wheelbase Size | 3080 mm | 2855 mm |
| Fuel Consumption Overall | 13.8 L/100km | 5.5 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
