2005 Audi S4 vs. 2003 Porsche 911
To start off, 2005 Audi S4 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Porsche 911. In addition, the cost of maintenance, including insurance, on 2003 Porsche 911 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, both vehicles can yield 340 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 405 kg more than 2003 Porsche 911.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 40 more torque (in Nm) than 2003 Porsche 911. (370 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Porsche 911.
Compare all specifications:
| 2005 Audi S4 | 2003 Porsche 911 | |
| Make | Audi | Porsche |
| Model | S4 | 911 |
| Year Released | 2005 | 2003 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4172 cc | 3596 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 340 HP |
| Engine RPM | 4000 RPM | 6800 RPM |
| Torque | 410 Nm | 370 Nm |
| Engine Bore Size | 85 mm | 96 mm |
| Engine Stroke Size | 93 mm | 82.8 mm |
| Engine Compression Ratio | 11.0:1 | 11.3:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1785 kg | 1380 kg |
| Vehicle Length | 4550 mm | 4440 mm |
| Vehicle Width | 1770 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1300 mm |
| Wheelbase Size | 2470 mm | 2360 mm |
| Fuel Consumption Highway | 11.2 L/100km | 8.3 L/100km |
| Fuel Consumption City | 15.7 L/100km | 16.5 L/100km |
| Fuel Consumption Overall | 13.8 L/100km | 11.3 L/100km |
| Fuel Tank Capacity | 66 L | 64 L |
