2005 Audi A4 vs. 2005 Audi S4
To start off, both 2005 Audi A4 and 2005 Audi S4 were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 160 more horse power than 2005 Audi A4. (180 HP @ 5700 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 260 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.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 170 more torque (in Nm) than 2005 Audi A4. (240 Nm). This means 2005 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 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | A4 | S4 |
| Year Released | 2005 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 180 HP | 340 HP |
| Engine RPM | 5700 RPM | 6300 RPM |
| Torque | 240 Nm | 410 Nm |
| Engine Bore Size | 81 mm | 85.1 mm |
| Engine Stroke Size | 86.4 mm | 93 mm |
| Engine Compression Ratio | 9.3:1 | 11.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1475 kg | 1735 kg |
| Vehicle Length | 4550 mm | 4550 mm |
| Vehicle Width | 1770 mm | 1770 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Consumption | 8 L/100km | 11.2 L/100km |
| Fuel Consumption City | 11.4 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 10 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 66 L | 63 L |
