2009 Audi RS6 vs. 2004 BMW 730
To start off, 2009 Audi RS6 is newer by 5 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 4,991 cc (10 cylinders), 2009 Audi RS6 is equipped with a bigger engine. In terms of performance, 2009 Audi RS6 (572 HP @ 6250 RPM) has 347 more horse power than 2004 BMW 730. (225 HP @ 6000 RPM). In normal driving conditions, 2009 Audi RS6 should accelerate faster than 2004 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi RS6 weights approximately 238 kg more than 2004 BMW 730. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi RS6 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, 2009 Audi RS6 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 Audi RS6 (650 Nm @ 1500 RPM) has 350 more torque (in Nm) than 2004 BMW 730. (300 Nm @ 3500 RPM). This means 2009 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 730.
Compare all specifications:
| 2009 Audi RS6 | 2004 BMW 730 | |
| Make | Audi | BMW |
| Model | RS6 | 730 |
| Year Released | 2009 | 2004 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4991 cc | 2979 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 572 HP | 225 HP |
| Engine RPM | 6250 RPM | 6000 RPM |
| Torque | 650 Nm | 300 Nm |
| Torque RPM | 1500 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 84 mm |
| Engine Stroke Size | 89 mm | 90 mm |
| Engine Compression Ratio | 10.5:1 | 10.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2028 kg | 1790 kg |
| Vehicle Length | 4930 mm | 5040 mm |
| Vehicle Width | 1900 mm | 1910 mm |
| Vehicle Height | 1470 mm | 1500 mm |
| Wheelbase Size | 2850 mm | 3000 mm |
| Fuel Tank Capacity | 80 L | 63 L |
