2005 Audi S4 vs. 2009 BMW X5
To start off, 2009 BMW X5 is newer by 4 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 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 58 more horse power than 2009 BMW X5. (282 HP @ 4400 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2009 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW X5 weights approximately 310 kg more than 2005 Audi S4.
Let's talk about torque, 2009 BMW X5 (580 Nm) has 170 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2009 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 2009 BMW X5 | |
| Make | Audi | BMW |
| Model | S4 | X5 |
| Year Released | 2005 | 2009 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 2993 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 282 HP |
| Engine RPM | 6300 RPM | 4400 RPM |
| Torque | 410 Nm | 580 Nm |
| Engine Bore Size | 85 mm | 84 mm |
| Engine Stroke Size | 93 mm | 90 mm |
| Engine Compression Ratio | 11.0:1 | 17.5:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1840 kg | 2150 kg |
| Vehicle Length | 4580 mm | 4860 mm |
| Vehicle Width | 1780 mm | 1940 mm |
| Vehicle Height | 1400 mm | 1740 mm |
| Wheelbase Size | 2660 mm | 2940 mm |
| Fuel Consumption Overall | 11.8 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 63 L | 85 L |
