1997 Audi S4 vs. 2003 BMW 645
To start off, 2003 BMW 645 is newer by 6 year(s). Which means there will be less support and parts availability for 1997 Audi S4. In addition, the cost of maintenance, including insurance, on 1997 Audi S4 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 178 kg more than 1997 Audi S4.
Because 2003 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2003 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1997 Audi S4, being front wheel drive (FWD), will offer much better control with better grip. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control.
Compare all specifications:
| 1997 Audi S4 | 2003 BMW 645 | |
| Make | Audi | BMW |
| Model | S4 | 645 |
| Year Released | 1997 | 2003 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 0 HP | 325 HP |
| Engine Bore Size | 81 mm | 92 mm |
| Engine Stroke Size | 86.4 mm | 82.7 mm |
| Engine Compression Ratio | 9.3:1 | 10.5:1 |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 5.9 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1512 kg | 1690 kg |
| Vehicle Length | 4490 mm | 4830 mm |
| Vehicle Width | 1740 mm | 1860 mm |
| Vehicle Height | 1400 mm | 1380 mm |
| Wheelbase Size | 2610 mm | 2890 mm |
| Fuel Tank Capacity | 62 L | 70 L |
