2005 Audi S4 vs. 2003 Audi RS4
To start off, 2005 Audi S4 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Audi RS4. In addition, the cost of maintenance, including insurance, on 2003 Audi RS4 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2003 Audi RS4 (377 HP @ 6300 RPM) has 37 more horse power than 2005 Audi S4. (340 HP @ 6300 RPM) In normal driving conditions, 2003 Audi RS4 should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 150 kg more than 2003 Audi RS4.
Let's talk about torque, 2003 Audi RS4 (449 Nm) has 39 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2003 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 2003 Audi RS4 | |
| Make | Audi | Audi |
| Model | S4 | RS4 |
| Year Released | 2005 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2671 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 340 HP | 377 HP |
| Engine RPM | 6300 RPM | 6300 RPM |
| Torque | 410 Nm | 449 Nm |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1735 kg | 1585 kg |
| Vehicle Length | 4550 mm | 4480 mm |
| Vehicle Width | 1770 mm | 1740 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2610 mm |
| Fuel Tank Capacity | 63 L | 55 L |
