2005 Audi A4 vs. 2004 Audi S4
To start off, 2005 Audi A4 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Audi S4. In addition, the cost of maintenance, including insurance, on 2004 Audi S4 would be higher. At 4,172 cc (8 cylinders), 2004 Audi S4 is equipped with a bigger engine. In terms of performance, 2004 Audi S4 (339 HP @ 7000 RPM) has 169 more horse power than 2005 Audi A4. (170 HP @ 6500 RPM) In normal driving conditions, 2004 Audi S4 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi S4 weights approximately 64 kg more than 2005 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A4. In wet, icy, snow, or gravel driving conditions, 2004 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, 2004 Audi S4 (410 Nm) has 180 more torque (in Nm) than 2005 Audi A4. (230 Nm). This means 2004 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 2004 Audi S4 | |
| Make | Audi | Audi |
| Model | A4 | S4 |
| Year Released | 2005 | 2004 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1786 cc | 4172 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 170 HP | 339 HP |
| Engine RPM | 6500 RPM | 7000 RPM |
| Torque | 230 Nm | 410 Nm |
| Engine Bore Size | 81 mm | 84.5 mm |
| Engine Stroke Size | 86 mm | 92.8 mm |
| Engine Compression Ratio | 9.3:1 | 11.0:1 |
| Drive Type | Front | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1656 kg | 1720 kg |
| Vehicle Length | 4580 mm | 4590 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1400 mm | 1430 mm |
| Wheelbase Size | 2770 mm | 2470 mm |
| Fuel Consumption | 7.8 L/100km | 9.8 L/100km |
| Fuel Consumption City | 10.2 L/100km | 19.6 L/100km |
| Fuel Consumption Overall | 9.1 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
