2006 Audi A4 vs. 2007 Audi S4
To start off, 2007 Audi S4 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Audi A4. In addition, the cost of maintenance, including insurance, on 2006 Audi A4 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 212 more horse power than 2006 Audi A4. (129 HP @ 5700 RPM) In normal driving conditions, 2007 Audi S4 should accelerate faster than 2006 Audi A4.
Let's talk about torque, 2007 Audi S4 (410 Nm @ 3500 RPM) has 215 more torque (in Nm) than 2006 Audi A4. (195 Nm @ 3300 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi A4.
Compare all specifications:
| 2006 Audi A4 | 2007 Audi S4 | |
| Make | Audi | Audi |
| Model | A4 | S4 |
| Year Released | 2006 | 2007 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 129 HP | 341 HP |
| Engine RPM | 5700 RPM | 7000 RPM |
| Torque | 195 Nm | 410 Nm |
| Torque RPM | 3300 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 84.6 mm |
| Engine Stroke Size | 92.8 mm | 92.7 mm |
| Engine Compression Ratio | 10.3:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 208 km/hour | 249 km/hour |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4550 mm | 4590 mm |
| Vehicle Width | 1780 mm | 1730 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2650 mm |
| Fuel Tank Capacity | 70 L | 63 L |
