2003 Audi RS6 vs. 2004 BMW 325
To start off, 2004 BMW 325 is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Audi RS6. In addition, the cost of maintenance, including insurance, on 2003 Audi RS6 would be higher. At 4,163 cc (8 cylinders), 2003 Audi RS6 is equipped with a bigger engine. In terms of performance, 2003 Audi RS6 (444 HP @ 6300 RPM) has 260 more horse power than 2004 BMW 325. (184 HP @ 7250 RPM). In normal driving conditions, 2003 Audi RS6 should accelerate faster than 2004 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi RS6 weights approximately 245 kg more than 2004 BMW 325. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2003 Audi RS6 (560 Nm) has 323 more torque (in Nm) than 2004 BMW 325. (237 Nm). This means 2003 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 325.
Compare all specifications:
| 2003 Audi RS6 | 2004 BMW 325 | |
| Make | Audi | BMW |
| Model | RS6 | 325 |
| Year Released | 2003 | 2004 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2490 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 444 HP | 184 HP |
| Engine RPM | 6300 RPM | 7250 RPM |
| Torque | 560 Nm | 237 Nm |
| Engine Bore Size | 84.5 mm | 84 mm |
| Engine Stroke Size | 93 mm | 75 mm |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1840 kg | 1595 kg |
| Vehicle Length | 4800 mm | 4480 mm |
| Vehicle Width | 1820 mm | 1750 mm |
| Vehicle Height | 1460 mm | 1420 mm |
| Wheelbase Size | 2760 mm | 2730 mm |
| Fuel Tank Capacity | 70 L | 63 L |
