2005 Audi A6 vs. 2003 Audi RS6
To start off, 2005 Audi A6 is newer by 2 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 274 more horse power than 2005 Audi A6. (170 HP @ 4000 RPM) In normal driving conditions, 2003 Audi RS6 should accelerate faster than 2005 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi RS6 weights approximately 225 kg more than 2005 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A6. In wet, icy, snow, or gravel driving conditions, 2003 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, 2003 Audi RS6 (560 Nm @ 1950 RPM) has 189 more torque (in Nm) than 2005 Audi A6. (371 Nm @ 1500 RPM). This means 2003 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
Compare all specifications:
| 2005 Audi A6 | 2003 Audi RS6 | |
| Make | Audi | Audi |
| Model | A6 | RS6 |
| Year Released | 2005 | 2003 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2393 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 170 HP | 444 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 371 Nm | 560 Nm |
| Torque RPM | 1500 RPM | 1950 RPM |
| Engine Bore Size | 78.3 mm | 84.5 mm |
| Engine Stroke Size | 86.4 mm | 93 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1615 kg | 1840 kg |
| Vehicle Length | 4800 mm | 4800 mm |
| Vehicle Width | 1820 mm | 1820 mm |
| Vehicle Height | 1460 mm | 1460 mm |
| Wheelbase Size | 2760 mm | 2760 mm |
| Fuel Tank Capacity | 70 L | 70 L |
