2007 Audi S4 vs. 2003 Audi A8
To start off, 2007 Audi S4 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Audi A8. In addition, the cost of maintenance, including insurance, on 2003 Audi A8 would be higher. At 4,163 cc (8 cylinders), 2007 Audi S4 is equipped with a bigger engine. In terms of performance, 2007 Audi S4 (341 HP @ 7000 RPM) has 124 more horse power than 2003 Audi A8. (217 HP @ 6300 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 2003 Audi A8.
Let's talk about torque, 2007 Audi S4 (410 Nm @ 3500 RPM) has 110 more torque (in Nm) than 2003 Audi A8. (300 Nm @ 8200 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A8.
Compare all specifications:
| 2007 Audi S4 | 2003 Audi A8 | |
| Make | Audi | Audi |
| Model | S4 | A8 |
| Year Released | 2007 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2976 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 341 HP | 217 HP |
| Engine RPM | 7000 RPM | 6300 RPM |
| Torque | 410 Nm | 300 Nm |
| Torque RPM | 3500 RPM | 8200 RPM |
| Engine Bore Size | 84.6 mm | 82.6 mm |
| Engine Stroke Size | 92.7 mm | 92.8 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4590 mm | 5190 mm |
| Vehicle Width | 1730 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1460 mm |
| Wheelbase Size | 2650 mm | 3080 mm |
| Fuel Tank Capacity | 63 L | 90 L |
