2005 Audi S4 vs. 2004 Audi A6
To start off, 2005 Audi S4 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Audi A6. In addition, the cost of maintenance, including insurance, on 2004 Audi A6 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (339 HP @ 7000 RPM) has 92 more horse power than 2004 Audi A6. (247 HP @ 6300 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2004 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A6 weights approximately 10 kg more than 2005 Audi S4.
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, 2005 Audi S4 (410 Nm @ 3500 RPM) has 70 more torque (in Nm) than 2004 Audi A6. (340 Nm @ 1800 RPM). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A6.
Compare all specifications:
| 2005 Audi S4 | 2004 Audi A6 | |
| Make | Audi | Audi |
| Model | S4 | A6 |
| Year Released | 2005 | 2004 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2671 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 339 HP | 247 HP |
| Engine RPM | 7000 RPM | 6300 RPM |
| Torque | 410 Nm | 340 Nm |
| Torque RPM | 3500 RPM | 1800 RPM |
| Engine Bore Size | 84.6 mm | 81 mm |
| Engine Stroke Size | 92.8 mm | 86 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1795 kg | 1805 kg |
| Vehicle Length | 4580 mm | 4800 mm |
| Vehicle Width | 1790 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1560 mm |
| Wheelbase Size | 2660 mm | 2770 mm |
| Fuel Tank Capacity | 66 L | 70 L |
