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, 2003 Porsche 911 (443 HP @ 6000 RPM) has 103 more horse power than 2005 Audi S4. (340 HP @ 4000 RPM) In normal driving conditions, 2003 Porsche 911 should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 81 kg more than 2003 Porsche 911.
Let's talk about torque, 2003 Porsche 911 (620 Nm) has 210 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2003 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 2003 Porsche 911 | |
| Make | Audi | Porsche |
| Model | S4 | 911 |
| Year Released | 2005 | 2003 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 4172 cc | 3600 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 340 HP | 443 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 410 Nm | 620 Nm |
| Engine Bore Size | 85 mm | 100 mm |
| Engine Stroke Size | 93 mm | 76.4 mm |
| Engine Compression Ratio | 11.0:1 | 9.4:1 |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1785 kg | 1704 kg |
| Vehicle Length | 4550 mm | 4440 mm |
| Vehicle Width | 1770 mm | 1840 mm |
| Vehicle Height | 1430 mm | 1300 mm |
| Wheelbase Size | 2470 mm | 2360 mm |
| Fuel Consumption Highway | 11.2 L/100km | 9.8 L/100km |
| Fuel Consumption City | 15.7 L/100km | 22.2 L/100km |
| Fuel Consumption Overall | 13.8 L/100km | 14.2 L/100km |
| Fuel Tank Capacity | 66 L | 64 L |
