2007 Audi S4 vs. 2007 BMW 523
To start off, both 2007 Audi S4 and 2007 BMW 523 were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. 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 166 more horse power than 2007 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 2007 BMW 523.
Let's talk about torque, 2007 Audi S4 (410 Nm @ 3500 RPM) has 180 more torque (in Nm) than 2007 BMW 523. (230 Nm @ 3500 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 523.
Compare all specifications:
| 2007 Audi S4 | 2007 BMW 523 | |
| Make | Audi | BMW |
| Model | S4 | 523 |
| Year Released | 2007 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2496 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 341 HP | 175 HP |
| Engine RPM | 7000 RPM | 5800 RPM |
| Torque | 410 Nm | 230 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 84.6 mm | 82 mm |
| Engine Stroke Size | 92.7 mm | 78.8 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4590 mm | 4850 mm |
| Vehicle Width | 1730 mm | 1470 mm |
| Vehicle Height | 1430 mm | 1850 mm |
| Wheelbase Size | 2650 mm | 2890 mm |
| Fuel Tank Capacity | 63 L | 70 L |
