2001 Audi RS4 vs. 2005 Audi S4
To start off, 2005 Audi S4 is newer by 4 year(s). Which means there will be less support and parts availability for 2001 Audi RS4. In addition, the cost of maintenance, including insurance, on 2001 Audi RS4 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2001 Audi RS4 (377 HP @ 6300 RPM) has 38 more horse power than 2005 Audi S4. (339 HP @ 7000 RPM). In normal driving conditions, 2001 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 210 kg more than 2001 Audi RS4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2001 Audi RS4 (449 Nm @ 2500 RPM) has 39 more torque (in Nm) than 2005 Audi S4. (410 Nm @ 3500 RPM). This means 2001 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2001 Audi RS4 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | RS4 | S4 |
| Year Released | 2001 | 2005 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 377 HP | 339 HP |
| Engine RPM | 6300 RPM | 7000 RPM |
| Torque | 449 Nm | 410 Nm |
| Torque RPM | 2500 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1585 kg | 1795 kg |
| Vehicle Length | 4480 mm | 4580 mm |
| Vehicle Width | 1740 mm | 1790 mm |
| Vehicle Height | 1450 mm | 1450 mm |
| Wheelbase Size | 2610 mm | 2660 mm |
| Fuel Tank Capacity | 55 L | 66 L |
