2005 Audi A6 vs. 2007 Audi S4
To start off, 2007 Audi S4 is newer by 2 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), 2007 Audi S4 is equipped with a bigger engine. In terms of performance, 2007 Audi S4 (339 HP @ 7000 RPM) has 92 more horse power than 2005 Audi A6. (247 HP @ 1800 RPM) In normal driving conditions, 2007 Audi S4 should accelerate faster than 2005 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi S4 weights approximately 135 kg more than 2005 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2007 Audi S4 (410 Nm @ 3500 RPM) has 60 more torque (in Nm) than 2005 Audi A6. (350 Nm @ 1800 RPM). This means 2007 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 | 2007 Audi S4 | |
| Make | Audi | Audi |
| Model | A6 | S4 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 247 HP | 339 HP |
| Engine RPM | 1800 RPM | 7000 RPM |
| Torque | 350 Nm | 410 Nm |
| Torque RPM | 1800 RPM | 3500 RPM |
| Engine Compression Ratio | 9.3:1 | 11.0:1 |
| Top Speed | 243 km/hour | 245 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 5.8 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1660 kg | 1795 kg |
| Vehicle Length | 4800 mm | 4580 mm |
| Vehicle Width | 1820 mm | 1790 mm |
| Vehicle Height | 1460 mm | 1450 mm |
| Wheelbase Size | 2580 mm | 2660 mm |
| Fuel Consumption Overall | 12.2 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 70 L | 66 L |
