2007 Audi A8 vs. 2009 BMW 745
To start off, 2009 BMW 745 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A8. In addition, the cost of maintenance, including insurance, on 2007 Audi A8 would be higher. At 4,423 cc (8 cylinders), 2009 BMW 745 is equipped with a bigger engine. In terms of performance, 2007 Audi A8 (329 HP @ 6500 RPM) has 4 more horse power than 2009 BMW 745. (325 HP @ 3800 RPM). In normal driving conditions, 2007 Audi A8 should accelerate faster than 2009 BMW 745. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 745 weights approximately 335 kg more than 2007 Audi A8.
Because 2007 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, 2007 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 BMW 745 (700 Nm @ 1900 RPM) has 270 more torque (in Nm) than 2007 Audi A8. (430 Nm @ 3500 RPM). This means 2009 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A8.
Compare all specifications:
| 2007 Audi A8 | 2009 BMW 745 | |
| Make | Audi | BMW |
| Model | A8 | 745 |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 4423 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 329 HP | 325 HP |
| Engine RPM | 6500 RPM | 3800 RPM |
| Torque | 430 Nm | 700 Nm |
| Torque RPM | 3500 RPM | 1900 RPM |
| Engine Bore Size | 84.5 mm | 87 mm |
| Engine Stroke Size | 93 mm | 93 mm |
| Engine Compression Ratio | 11.0:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.3 seconds | 6.9 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 | 1780 kg | 2115 kg |
| Vehicle Length | 5060 mm | 5050 mm |
| Vehicle Width | 1900 mm | 1910 mm |
| Vehicle Height | 1450 mm | 1500 mm |
| Wheelbase Size | 2950 mm | 3000 mm |
| Fuel Consumption Overall | 8.8 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 90 L | 88 L |
