2007 Audi S8 vs. 2009 BMW 745
To start off, 2009 BMW 745 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi S8. In addition, the cost of maintenance, including insurance, on 2007 Audi S8 would be higher. At 4,423 cc (8 cylinders), 2009 BMW 745 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 745 weights approximately 365 kg more than 2007 Audi S8.
Because 2007 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 2009 BMW 745. In wet, icy, snow, or gravel driving conditions, 2007 Audi S8 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, 2009 BMW 745 (700 Nm @ 1900 RPM) has 270 more torque (in Nm) than 2007 Audi S8. (430 Nm @ 3400 RPM). This means 2009 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi S8.
Compare all specifications:
| 2007 Audi S8 | 2009 BMW 745 | |
| Make | Audi | BMW |
| Model | S8 | 745 |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4171 cc | 4423 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 0 HP | 325 HP |
| Torque | 430 Nm | 700 Nm |
| Torque RPM | 3400 RPM | 1900 RPM |
| Drive Type | AWD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1750 kg | 2115 kg |
| Wheelbase Size | 2290 mm | 3000 mm |
| Fuel Tank Capacity | 90 L | 88 L |
