2009 Audi S4 vs. 2007 BMW 730
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 730. In addition, the cost of maintenance, including insurance, on 2007 BMW 730 would be higher. At 4,161 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 6800 RPM) has 85 more horse power than 2007 BMW 730. (255 HP @ 6600 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 2007 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 730 weights approximately 890 kg more than 2009 Audi S4.
Because 2009 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 730. 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, 2009 Audi S4 (410 Nm @ 3500 RPM) has 110 more torque (in Nm) than 2007 BMW 730. (300 Nm @ 2500 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 730.
Compare all specifications:
| 2009 Audi S4 | 2007 BMW 730 | |
| Make | Audi | BMW |
| Model | S4 | 730 |
| Year Released | 2009 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 2996 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 255 HP |
| Engine RPM | 6800 RPM | 6600 RPM |
| Torque | 410 Nm | 300 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| 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 | 1820 kg |
| Vehicle Length | 4580 mm | 5180 mm |
| Vehicle Width | 1780 mm | 1910 mm |
| Vehicle Height | 1400 mm | 1500 mm |
| Wheelbase Size | 2660 mm | 3140 mm |
| Fuel Consumption Overall | 14.7 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 63 L | 88 L |
