2007 Audi S4 vs. 2006 Audi A4
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 119 more horse power than 2006 Audi A4. (222 HP @ 4000 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 2006 Audi A4.
Let's talk about torque, 2006 Audi A4 (450 Nm @ 1400 RPM) has 40 more torque (in Nm) than 2007 Audi S4. (410 Nm @ 3500 RPM). This means 2006 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi S4.
Compare all specifications:
| 2007 Audi S4 | 2006 Audi A4 | |
| Make | Audi | Audi |
| Model | S4 | A4 |
| Year Released | 2007 | 2006 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2967 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 341 HP | 222 HP |
| Engine RPM | 7000 RPM | 4000 RPM |
| Torque | 410 Nm | 450 Nm |
| Torque RPM | 3500 RPM | 1400 RPM |
| Engine Bore Size | 84.6 mm | 83.1 mm |
| Engine Stroke Size | 92.7 mm | 91.4 mm |
| Engine Compression Ratio | 11.0:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4590 mm | 4550 mm |
| Vehicle Width | 1730 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2650 mm | 2660 mm |
| Fuel Tank Capacity | 63 L | 70 L |
