2004 Audi A4 vs. 2006 Audi S4
To start off, 2006 Audi S4 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Audi A4. In addition, the cost of maintenance, including insurance, on 2004 Audi A4 would be higher. At 4,163 cc (8 cylinders), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (340 HP @ 7000 RPM) has 192 more horse power than 2004 Audi A4. (148 HP @ 6000 RPM) In normal driving conditions, 2006 Audi S4 should accelerate faster than 2004 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi S4 weights approximately 479 kg more than 2004 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2006 Audi S4 (410 Nm @ 3500 RPM) has 209 more torque (in Nm) than 2004 Audi A4. (201 Nm @ 3500 RPM). This means 2006 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A4.
Compare all specifications:
| 2004 Audi A4 | 2006 Audi S4 | |
| Make | Audi | Audi |
| Model | A4 | S4 |
| Year Released | 2004 | 2006 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 148 HP | 340 HP |
| Engine RPM | 6000 RPM | 7000 RPM |
| Torque | 201 Nm | 410 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 84.5 mm |
| Engine Stroke Size | 92.8 mm | 93 mm |
| Acceleration 0-100mph | 9.9 seconds | 5.8 seconds |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1405 kg | 1884 kg |
| Vehicle Length | 4550 mm | 4590 mm |
| Vehicle Width | 1780 mm | 1790 mm |
| Vehicle Height | 1430 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Consumption Overall | 7.1 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
