2005 Audi S4 vs. 2008 BMW 545
To start off, 2008 BMW 545 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 Audi S4 would be higher. At 4,397 cc (8 cylinders), 2008 BMW 545 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 12 more horse power than 2008 BMW 545. (328 HP @ 6100 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2008 BMW 545. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 30 kg more than 2008 BMW 545. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2008 BMW 545 (450 Nm) has 40 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2008 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 2008 BMW 545 | |
| Make | Audi | BMW |
| Model | S4 | 545 |
| Year Released | 2005 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4397 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 328 HP |
| Engine RPM | 6300 RPM | 6100 RPM |
| Torque | 410 Nm | 450 Nm |
| Engine Bore Size | 85.1 mm | 92 mm |
| Engine Stroke Size | 93 mm | 82.7 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1735 kg | 1705 kg |
| Vehicle Length | 4550 mm | 4850 mm |
| Vehicle Width | 1770 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2890 mm |
| Fuel Consumption Overall | 13.8 L/100km | 11 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
