2004 Audi S4 vs. 2009 BMW 545
To start off, 2009 BMW 545 is newer by 5 year(s). Which means there will be less support and parts availability for 2004 Audi S4. In addition, the cost of maintenance, including insurance, on 2004 Audi S4 would be higher. At 4,398 cc (8 cylinders), 2009 BMW 545 is equipped with a bigger engine. In terms of performance, 2004 Audi S4 (339 HP @ 7000 RPM) has 11 more horse power than 2009 BMW 545. (328 HP @ 6100 RPM). In normal driving conditions, 2004 Audi S4 should accelerate faster than 2009 BMW 545. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi S4 weights approximately 15 kg more than 2009 BMW 545. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 545. In wet, icy, snow, or gravel driving conditions, 2004 Audi S4 will offer significantly more control. 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. Let's talk about torque, 2009 BMW 545 (450 Nm @ 3600 RPM) has 40 more torque (in Nm) than 2004 Audi S4. (410 Nm @ 3500 RPM). This means 2009 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi S4.
Compare all specifications:
| 2004 Audi S4 | 2009 BMW 545 | |
| Make | Audi | BMW |
| Model | S4 | 545 |
| Year Released | 2004 | 2009 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 339 HP | 328 HP |
| Engine RPM | 7000 RPM | 6100 RPM |
| Torque | 410 Nm | 450 Nm |
| Torque RPM | 3500 RPM | 3600 RPM |
| Engine Bore Size | 84.5 mm | 92 mm |
| Engine Stroke Size | 92.8 mm | 82.7 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.8 seconds | 6.1 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1720 kg | 1705 kg |
| Vehicle Length | 4590 mm | 4850 mm |
| Vehicle Width | 1780 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2470 mm | 2890 mm |
| Fuel Consumption Overall | 13.4 L/100km | 11 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
