2005 Audi A6 vs. 2008 Audi S4
To start off, 2008 Audi S4 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Audi A6. In addition, the cost of maintenance, including insurance, on 2005 Audi A6 would be higher. At 4,163 cc (8 cylinders), 2008 Audi S4 is equipped with a bigger engine. In terms of performance, 2008 Audi S4 (340 HP @ 7000 RPM) has 192 more horse power than 2005 Audi A6. (148 HP @ 5700 RPM) In normal driving conditions, 2008 Audi S4 should accelerate faster than 2005 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A6 weights approximately 330 kg more than 2008 Audi S4.
Because 2008 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A6. In wet, icy, snow, or gravel driving conditions, 2008 Audi S4 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2008 Audi S4 (410 Nm @ 3500 RPM) has 200 more torque (in Nm) than 2005 Audi A6. (210 Nm @ 1750 RPM). This means 2008 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
Compare all specifications:
| 2005 Audi A6 | 2008 Audi S4 | |
| Make | Audi | Audi |
| Model | A6 | S4 |
| Year Released | 2005 | 2008 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 148 HP | 340 HP |
| Engine RPM | 5700 RPM | 7000 RPM |
| Torque | 210 Nm | 410 Nm |
| Torque RPM | 1750 RPM | 3500 RPM |
| Engine Compression Ratio | 10.0:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 209 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.9 seconds | 5.9 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1490 kg | 1160 kg |
| Vehicle Length | 4800 mm | 4580 mm |
| Vehicle Width | 1820 mm | 1790 mm |
| Vehicle Height | 1460 mm | 1450 mm |
| Wheelbase Size | 2770 mm | 2660 mm |
| Fuel Consumption Overall | 8.5 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
