2003 Audi A3 vs. 2005 Audi S4
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 A3. In addition, the cost of maintenance, including insurance, on 2003 Audi A3 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 236 more horse power than 2003 Audi A3. (104 HP @ 4000 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 2003 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 490 kg more than 2003 Audi A3. 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 160 more torque (in Nm) than 2003 Audi A3. (250 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A3.
Compare all specifications:
| 2003 Audi A3 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | A3 | S4 |
| Year Released | 2003 | 2005 |
| Body Type | Hatchback | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1896 cc | 4172 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 5 valves |
| Horse Power | 104 HP | 340 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 250 Nm | 410 Nm |
| Engine Compression Ratio | 19.0:1 | 11.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1295 kg | 1785 kg |
| Vehicle Length | 4210 mm | 4550 mm |
| Vehicle Width | 1770 mm | 1770 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2580 mm | 2470 mm |
| Fuel Consumption Overall | 5.1 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 55 L | 66 L |
