2009 Audi A4 vs. 2004 Audi S4
To start off, 2009 Audi A4 is newer by 5 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 4,162 cc (8 cylinders), 2004 Audi S4 is equipped with a bigger engine. In terms of performance, 2004 Audi S4 (339 HP @ 7000 RPM) has 178 more horse power than 2009 Audi A4. (161 HP @ 5700 RPM) In normal driving conditions, 2004 Audi S4 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi S4 weights approximately 225 kg more than 2009 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 2009 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 @ 3500 RPM) has 185 more torque (in Nm) than 2009 Audi A4. (225 Nm @ 1950 RPM). This means 2004 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 2004 Audi S4 has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 Audi S4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 2004 Audi S4 | |
| Make | Audi | Audi |
| Model | A4 | S4 |
| Year Released | 2009 | 2004 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 4162 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 161 HP | 339 HP |
| Engine RPM | 5700 RPM | 7000 RPM |
| Torque | 225 Nm | 410 Nm |
| Torque RPM | 1950 RPM | 3500 RPM |
| Engine Bore Size | 81 mm | 84.5 mm |
| Engine Stroke Size | 86.4 mm | 92.8 mm |
| Engine Compression Ratio | 9.0:1 | 11.0:1 |
| Top Speed | 226 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.4 seconds | 5.8 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1540 kg | 1765 kg |
| Vehicle Length | 4580 mm | 4590 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1400 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2470 mm |
| Fuel Consumption Overall | 8.5 L/100km | 12.3 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
