2007 Audi S6 vs. 2004 BMW 730
To start off, 2007 Audi S6 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 BMW 730. In addition, the cost of maintenance, including insurance, on 2004 BMW 730 would be higher. At 4,172 cc (8 cylinders), 2007 Audi S6 is equipped with a bigger engine. In terms of performance, 2007 Audi S6 (335 HP @ 7000 RPM) has 110 more horse power than 2004 BMW 730. (225 HP @ 6000 RPM). In normal driving conditions, 2007 Audi S6 should accelerate faster than 2004 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 730 weights approximately 30 kg more than 2007 Audi S6.
Because 2007 Audi S6 is four wheel drive (4WD), it will have significant more traction and grip than 2004 BMW 730. In wet, icy, snow, or gravel driving conditions, 2007 Audi S6 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, 2007 Audi S6 (420 Nm @ 3400 RPM) has 120 more torque (in Nm) than 2004 BMW 730. (300 Nm @ 3500 RPM). This means 2007 Audi S6 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 730.
Compare all specifications:
| 2007 Audi S6 | 2004 BMW 730 | |
| Make | Audi | BMW |
| Model | S6 | 730 |
| Year Released | 2007 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2979 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 335 HP | 225 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 420 Nm | 300 Nm |
| Torque RPM | 3400 RPM | 3500 RPM |
| Engine Compression Ratio | 11.0:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1760 kg | 1790 kg |
| Vehicle Length | 4840 mm | 5040 mm |
| Vehicle Width | 2000 mm | 1910 mm |
| Vehicle Height | 1450 mm | 1500 mm |
| Wheelbase Size | 2770 mm | 3000 mm |
| Fuel Tank Capacity | 82 L | 63 L |
