2008 Audi A6 vs. 2005 Audi S4
To start off, 2008 Audi A6 is newer by 3 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, 2005 Audi S4 (340 HP @ 6300 RPM) has 179 more horse power than 2008 Audi A6. (161 HP @ 4000 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 2008 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 250 kg more than 2008 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 100 more torque (in Nm) than 2008 Audi A6. (310 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A6.
Compare all specifications:
| 2008 Audi A6 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | A6 | S4 |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2495 cc | 4161 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 161 HP | 340 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 310 Nm | 410 Nm |
| Engine Bore Size | 78.3 mm | 85 mm |
| Engine Stroke Size | 86.4 mm | 93 mm |
| Engine Compression Ratio | 19.5:1 | 11.0:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1590 kg | 1840 kg |
| Vehicle Length | 4180 mm | 4580 mm |
| Vehicle Height | 1370 mm | 1400 mm |
| Wheelbase Size | 2770 mm | 2660 mm |
| Fuel Consumption Overall | 6.9 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
