2008 Audi A8 vs. 2009 BMW 745
To start off, 2009 BMW 745 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi A8. In addition, the cost of maintenance, including insurance, on 2008 Audi A8 would be higher. At 4,398 cc (8 cylinders), 2009 BMW 745 is equipped with a bigger engine. In terms of performance, 2009 BMW 745 (328 HP @ 6100 RPM) has 57 more horse power than 2008 Audi A8. (271 HP @ 3750 RPM) In normal driving conditions, 2009 BMW 745 should accelerate faster than 2008 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 745 weights approximately 5 kg more than 2008 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 745. In wet, icy, snow, or gravel driving conditions, 2008 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, 2008 Audi A8 (650 Nm @ 1800 RPM) has 200 more torque (in Nm) than 2009 BMW 745. (450 Nm @ 3600 RPM). This means 2008 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 745.
Compare all specifications:
| 2008 Audi A8 | 2009 BMW 745 | |
| Make | Audi | BMW |
| Model | A8 | 745 |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3934 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 271 HP | 328 HP |
| Engine RPM | 3750 RPM | 6100 RPM |
| Torque | 650 Nm | 450 Nm |
| Torque RPM | 1800 RPM | 3600 RPM |
| Engine Bore Size | 81 mm | 92.1 mm |
| Engine Stroke Size | 95.5 mm | 82.7 mm |
| Engine Compression Ratio | 18.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 6.7 seconds | 6.3 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 | 1940 kg | 1945 kg |
| Vehicle Length | 5060 mm | 5040 mm |
| Vehicle Width | 1900 mm | 1910 mm |
| Vehicle Height | 1450 mm | 1500 mm |
| Wheelbase Size | 2950 mm | 3000 mm |
| Fuel Consumption Overall | 9.7 L/100km | 10.9 L/100km |
| Fuel Tank Capacity | 90 L | 88 L |
