2005 Audi A8 vs. 2005 Audi S4
To start off, both 2005 Audi A8 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 @ 6200 RPM) has 122 more horse power than 2005 Audi A8. (218 HP @ 6300 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 2005 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 882 kg more than 2005 Audi A8. 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 2005 Audi A8. (300 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A8.
Compare all specifications:
| 2005 Audi A8 | 2005 Audi S4 | |
| Make | Audi | Audi |
| Model | A8 | S4 |
| Year Released | 2005 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 218 HP | 340 HP |
| Engine RPM | 6300 RPM | 6200 RPM |
| Torque | 300 Nm | 410 Nm |
| Engine Bore Size | 82.5 mm | 85 mm |
| Engine Stroke Size | 92.8 mm | 93 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 900 kg | 1782 kg |
| Vehicle Length | 5190 mm | 4550 mm |
| Vehicle Width | 1900 mm | 1770 mm |
| Vehicle Height | 1460 mm | 1430 mm |
| Wheelbase Size | 3080 mm | 2760 mm |
| Fuel Consumption Overall | 9.6 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 90 L | 66 L |
