2006 BMW 645 vs. 2012 Audi A7
To start off, 2012 Audi A7 is newer by 6 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 18 more horse power than 2012 Audi A7. (310 HP @ 5500 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2012 Audi A7. With that said, vehicle weight also plays an important factor in acceleration. 2012 Audi A7 weights approximately 100 kg more than 2006 BMW 645.
Because 2012 Audi A7 is all wheel drive (AWD), it will have significant more traction and grip than 2006 BMW 645. In wet, icy, snow, or gravel driving conditions, 2012 Audi A7 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 10 more torque (in Nm) than 2012 Audi A7. (440 Nm @ 2900 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2012 Audi A7.
Compare all specifications:
| 2006 BMW 645 | 2012 Audi A7 | |
| Make | BMW | Audi |
| Model | 645 | A7 |
| Year Released | 2006 | 2012 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 3000 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 310 HP |
| Engine RPM | 6100 RPM | 5500 RPM |
| Torque | 450 Nm | 440 Nm |
| Torque RPM | 3600 RPM | 2900 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1810 kg | 1910 kg |
| Vehicle Length | 4830 mm | 4968 mm |
| Vehicle Width | 1860 mm | 1910 mm |
| Vehicle Height | 1380 mm | 1420 mm |
| Wheelbase Size | 2790 mm | 2913 mm |
| Fuel Tank Capacity | 70 L | 75 L |
