2005 Audi S4 vs. 2005 Audi A4
To start off, both 2005 Audi S4 and 2005 Audi A4 were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 202 more horse power than 2005 Audi A4. (138 HP @ 4000 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2005 Audi A4.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 90 more torque (in Nm) than 2005 Audi A4. (320 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 S4 | 2005 Audi A4 | |
| Make | Audi | Audi |
| Model | S4 | A4 |
| Year Released | 2005 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 1984 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 138 HP |
| Engine RPM | 6300 RPM | 4000 RPM |
| Torque | 410 Nm | 320 Nm |
| Engine Bore Size | 85 mm | 81 mm |
| Engine Stroke Size | 93 mm | 95.5 mm |
| Engine Compression Ratio | 11.0:1 | 18.0:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4580 mm | 4550 mm |
| Vehicle Width | 1780 mm | 1780 mm |
| Vehicle Height | 1400 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Tank Capacity | 63 L | 66 L |
