2005 Audi S4 vs. 2009 Audi A4
To start off, 2009 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 Audi S4 would be higher. At 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 122 more horse power than 2009 Audi A4. (218 HP @ 5900 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 245 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.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 110 more torque (in Nm) than 2009 Audi A4. (300 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2005 Audi S4 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | S4 | A4 |
| Year Released | 2005 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 1984 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 218 HP |
| Engine RPM | 6300 RPM | 5900 RPM |
| Torque | 410 Nm | 300 Nm |
| Engine Bore Size | 85 mm | 82.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1840 kg | 1595 kg |
| Vehicle Length | 4580 mm | 4610 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1400 mm | 1400 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Consumption Overall | 11.8 L/100km | 9 L/100km |
| Fuel Tank Capacity | 63 L | 63 L |
