2009 BMW X6 vs. 2007 Audi S4
To start off, 2009 BMW X6 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi S4. In addition, the cost of maintenance, including insurance, on 2007 Audi S4 would be higher. At 4,163 cc (8 cylinders), 2007 Audi S4 is equipped with a bigger engine. In terms of performance, 2007 Audi S4 (339 HP @ 7000 RPM) has 107 more horse power than 2009 BMW X6. (232 HP @ 4000 RPM) In normal driving conditions, 2007 Audi S4 should accelerate faster than 2009 BMW X6. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW X6 weights approximately 415 kg more than 2007 Audi S4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 X6 (520 Nm @ 2000 RPM) has 110 more torque (in Nm) than 2007 Audi S4. (410 Nm @ 3500 RPM). This means 2009 BMW X6 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi S4.
Compare all specifications:
| 2009 BMW X6 | 2007 Audi S4 | |
| Make | BMW | Audi |
| Model | X6 | S4 |
| Year Released | 2009 | 2007 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 232 HP | 339 HP |
| Engine RPM | 4000 RPM | 7000 RPM |
| Torque | 520 Nm | 410 Nm |
| Torque RPM | 2000 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 84.5 mm |
| Engine Stroke Size | 90 mm | 92.8 mm |
| Engine Compression Ratio | 17.0:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 210 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8 seconds | 5.9 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2150 kg | 1735 kg |
| Vehicle Length | 4880 mm | 4580 mm |
| Vehicle Width | 1990 mm | 1790 mm |
| Vehicle Height | 1700 mm | 1420 mm |
| Wheelbase Size | 2940 mm | 2660 mm |
| Fuel Consumption Overall | 8.2 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 85 L | 63 L |
