2005 Audi S4 vs. 2007 Audi S6
To start off, 2007 Audi S6 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 5,204 cc (10 cylinders), 2007 Audi S6 is equipped with a bigger engine. In terms of performance, 2007 Audi S6 (436 HP @ 6800 RPM) has 96 more horse power than 2005 Audi S4. (340 HP @ 6300 RPM) In normal driving conditions, 2007 Audi S6 should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 80 kg more than 2007 Audi S6.
Let's talk about torque, 2007 Audi S6 (540 Nm) has 130 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2007 Audi S6 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 2007 Audi S6 | |
| Make | Audi | Audi |
| Model | S4 | S6 |
| Year Released | 2005 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 5204 cc |
| Engine Cylinders | 8 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 436 HP |
| Engine RPM | 6300 RPM | 6800 RPM |
| Torque | 410 Nm | 540 Nm |
| Engine Bore Size | 85 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1840 kg | 1760 kg |
| Vehicle Length | 4580 mm | 4920 mm |
| Vehicle Width | 1780 mm | 2020 mm |
| Vehicle Height | 1400 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2850 mm |
| Fuel Consumption | 10.2 L/100km | 11.2 L/100km |
| Fuel Consumption City | 13.8 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 63 L | 80 L |
