2009 Audi S4 vs. 2007 BMW 750
To start off, 2009 Audi S4 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW 750. In addition, the cost of maintenance, including insurance, on 2007 BMW 750 would be higher. At 4,799 cc (8 cylinders), 2007 BMW 750 is equipped with a bigger engine. In terms of performance, 2007 BMW 750 (362 HP @ 6300 RPM) has 22 more horse power than 2009 Audi S4. (340 HP @ 6800 RPM) In normal driving conditions, 2007 BMW 750 should accelerate faster than 2009 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 750 weights approximately 1125 kg more than 2009 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 750. In wet, icy, snow, or gravel driving conditions, 2009 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, 2007 BMW 750 (490 Nm @ 3400 RPM) has 80 more torque (in Nm) than 2009 Audi S4. (410 Nm @ 3500 RPM). This means 2007 BMW 750 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi S4.
Compare all specifications:
| 2009 Audi S4 | 2007 BMW 750 | |
| Make | Audi | BMW |
| Model | S4 | 750 |
| Year Released | 2009 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4799 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 362 HP |
| Engine RPM | 6800 RPM | 6300 RPM |
| Torque | 410 Nm | 490 Nm |
| Torque RPM | 3500 RPM | 3400 RPM |
| Engine Bore Size | 84.5 mm | 93 mm |
| Engine Stroke Size | 92.8 mm | 88.3 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 2055 kg |
| Vehicle Length | 4580 mm | 5180 mm |
| Vehicle Width | 1780 mm | 1910 mm |
| Vehicle Height | 1400 mm | 1480 mm |
| Wheelbase Size | 2660 mm | 3140 mm |
| Fuel Consumption City | 16.8 L/100km | 16.9 L/100km |
| Fuel Consumption Overall | 14.7 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 63 L | 88 L |
