2005 Audi S4 vs. 2007 Porsche 911
To start off, 2007 Porsche 911 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 Audi S4 would be higher. At 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2007 Porsche 911 (350 HP @ 6600 RPM) has 10 more horse power than 2005 Audi S4. (340 HP @ 6300 RPM) In normal driving conditions, 2007 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 335 kg more than 2007 Porsche 911.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 10 more torque (in Nm) than 2007 Porsche 911. (400 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Porsche 911.
Compare all specifications:
| 2005 Audi S4 | 2007 Porsche 911 | |
| Make | Audi | Porsche |
| Model | S4 | 911 |
| Year Released | 2005 | 2007 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 4161 cc | 3824 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 350 HP |
| Engine RPM | 6300 RPM | 6600 RPM |
| Torque | 410 Nm | 400 Nm |
| Engine Bore Size | 85 mm | 99 mm |
| Engine Stroke Size | 93 mm | 82.8 mm |
| Engine Compression Ratio | 11.0:1 | 11.8:1 |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1840 kg | 1505 kg |
| Vehicle Length | 4580 mm | 4430 mm |
| Vehicle Width | 1780 mm | 1810 mm |
| Vehicle Height | 1400 mm | 1310 mm |
| Wheelbase Size | 2660 mm | 2360 mm |
| Fuel Consumption Highway | 10.2 L/100km | 9.1 L/100km |
| Fuel Consumption City | 13.8 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 11.6 L/100km |
| Fuel Tank Capacity | 63 L | 64 L |
