2009 Audi A8 vs. 2007 BMW 730
To start off, 2009 Audi A8 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 4,134 cc (8 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (322 HP @ 3750 RPM) has 67 more horse power than 2007 BMW 730. (255 HP @ 6600 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2007 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 125 kg more than 2007 BMW 730. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A8 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 A8 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 A8 (650 Nm @ 1600 RPM) has 350 more torque (in Nm) than 2007 BMW 730. (300 Nm @ 2500 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 730.
Compare all specifications:
| 2009 Audi A8 | 2007 BMW 730 | |
| Make | Audi | BMW |
| Model | A8 | 730 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4134 cc | 2996 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 255 HP |
| Engine RPM | 3750 RPM | 6600 RPM |
| Torque | 650 Nm | 300 Nm |
| Torque RPM | 1600 RPM | 2500 RPM |
| Engine Compression Ratio | 16.5:1 | 10.7:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 250 km/hour | 244 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 7.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1945 kg | 1820 kg |
| Vehicle Length | 5070 mm | 5180 mm |
| Vehicle Width | 1900 mm | 1910 mm |
| Vehicle Height | 1450 mm | 1500 mm |
| Wheelbase Size | 2950 mm | 3140 mm |
| Fuel Consumption Overall | 9.4 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 90 L | 88 L |
