2005 Audi S4 vs. 2007 BMW X5
To start off, 2007 BMW X5 is newer by 2 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 4,799 cc (8 cylinders), 2007 BMW X5 is equipped with a bigger engine. In terms of performance, 2007 BMW X5 (350 HP @ 6300 RPM) has 10 more horse power than 2005 Audi S4. (340 HP @ 6300 RPM) In normal driving conditions, 2007 BMW X5 should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 465 kg more than 2005 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2007 BMW X5 (475 Nm) has 65 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2007 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 | 2007 BMW X5 | |
| Make | Audi | BMW |
| Model | S4 | X5 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4799 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 350 HP |
| Engine RPM | 6300 RPM | 6300 RPM |
| Torque | 410 Nm | 475 Nm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1735 kg | 2200 kg |
| Vehicle Length | 4550 mm | 4670 mm |
| Vehicle Width | 1770 mm | 1940 mm |
| Vehicle Height | 1430 mm | 1740 mm |
| Wheelbase Size | 2660 mm | 2940 mm |
| Fuel Consumption Overall | 13.8 L/100km | 12.5 L/100km |
| Fuel Tank Capacity | 63 L | 85 L |
