2009 Audi A6 vs. 2005 Audi S4
To start off, 2009 Audi A6 is newer by 4 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), 2009 Audi A6 is equipped with a bigger engine. In terms of performance, 2009 Audi A6 (430 HP @ 6800 RPM) has 90 more horse power than 2005 Audi S4. (340 HP @ 6300 RPM). In normal driving conditions, 2009 Audi A6 should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A6 weights approximately 130 kg more than 2005 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Audi A6 (540 Nm) has 130 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2009 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2009 Audi A6 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | A6 | S4 |
| Year Released | 2009 | 2005 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 4161 cc |
| Engine Cylinders | 10 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 430 HP | 340 HP |
| Engine RPM | 6800 RPM | 6300 RPM |
| Torque | 540 Nm | 410 Nm |
| Engine Bore Size | 84.5 mm | 85 mm |
| Engine Stroke Size | 92.8 mm | 93 mm |
| Engine Compression Ratio | 12.5:1 | 11.0:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1970 kg | 1840 kg |
| Vehicle Length | 4940 mm | 4580 mm |
| Vehicle Width | 1870 mm | 1780 mm |
| Vehicle Height | 1460 mm | 1400 mm |
| Wheelbase Size | 2850 mm | 2660 mm |
| Fuel Consumption Overall | 13.4 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 80 L | 63 L |
