2002 Audi A4 vs. 2005 Audi S4
To start off, 2005 Audi S4 is newer by 3 year(s). Which means there will be less support and parts availability for 2002 Audi A4. In addition, the cost of maintenance, including insurance, on 2002 Audi A4 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 4000 RPM) has 172 more horse power than 2002 Audi A4. (168 HP @ 5700 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 2002 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 410 kg more than 2002 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 185 more torque (in Nm) than 2002 Audi A4. (225 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2002 Audi A4.
Compare all specifications:
| 2002 Audi A4 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | A4 | S4 |
| Year Released | 2002 | 2005 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 4172 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 168 HP | 340 HP |
| Engine RPM | 5700 RPM | 4000 RPM |
| Torque | 225 Nm | 410 Nm |
| Engine Bore Size | 81 mm | 85 mm |
| Engine Stroke Size | 86.4 mm | 93 mm |
| Engine Compression Ratio | 9.3:1 | 11.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1375 kg | 1785 kg |
| Vehicle Length | 4550 mm | 4550 mm |
| Vehicle Width | 1780 mm | 1770 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2470 mm |
| Fuel Consumption | 6.7 L/100km | 11.2 L/100km |
| Fuel Consumption City | 11.8 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 8.6 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 70 L | 66 L |
