2005 Audi S8 vs. 2007 BMW 730
To start off, 2007 BMW 730 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi S8. In addition, the cost of maintenance, including insurance, on 2005 Audi S8 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S8 is equipped with a bigger engine. In terms of performance, 2007 BMW 730 (255 HP @ 6600 RPM) has 8 more horse power than 2005 Audi S8. (247 HP @ 4000 RPM) In normal driving conditions, 2007 BMW 730 should accelerate faster than 2005 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 730 weights approximately 50 kg more than 2005 Audi S8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 2007 BMW 730. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Audi S8 (450 Nm @ 3400 RPM) has 150 more torque (in Nm) than 2007 BMW 730. (300 Nm @ 2500 RPM). This means 2005 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 730.
Compare all specifications:
| 2005 Audi S8 | 2007 BMW 730 | |
| Make | Audi | BMW |
| Model | S8 | 730 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2996 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 247 HP | 255 HP |
| Engine RPM | 4000 RPM | 6600 RPM |
| Torque | 450 Nm | 300 Nm |
| Torque RPM | 3400 RPM | 2500 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 | 1770 kg | 1820 kg |
| Wheelbase Size | 2290 mm | 3140 mm |
| Fuel Tank Capacity | 90 L | 88 L |
