2009 Audi A8 vs. 2003 BMW 645
To start off, 2009 Audi A8 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 BMW 645. In addition, the cost of maintenance, including insurance, on 2003 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (330 HP @ 6500 RPM) has 9 more horse power than 2003 BMW 645. (321 HP @ 6100 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2003 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 40 kg more than 2009 Audi A8.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 645. 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, 2003 BMW 645 (450 Nm @ 3600 RPM) has 20 more torque (in Nm) than 2009 Audi A8. (430 Nm @ 3500 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A8.
Compare all specifications:
2009 Audi A8 | 2003 BMW 645 | |
Make | Audi | BMW |
Model | A8 | 645 |
Year Released | 2009 | 2003 |
Body Type | Sedan | Convertible |
Engine Position | Front | Front |
Engine Size | 4172 cc | 4398 cc |
Engine Cylinders | 8 cylinders | 8 cylinders |
Engine Type | V | V |
Valves per Cylinder | 5 valves | 4 valves |
Horse Power | 330 HP | 321 HP |
Engine RPM | 6500 RPM | 6100 RPM |
Torque | 430 Nm | 450 Nm |
Torque RPM | 3500 RPM | 3600 RPM |
Engine Bore Size | 84.5 mm | 92 mm |
Engine Stroke Size | 93 mm | 82.7 mm |
Engine Compression Ratio | 11.0:1 | 10.5:1 |
Top Speed | 250 km/hour | 250 km/hour |
Acceleration 0-100mph | 6.6 seconds | 6.2 seconds |
Drive Type | 4WD | Rear |
Transmission Type | Automatic | Automatic |
Number of Seats | 5 seats | 4 seats |
Number of Doors | 4 doors | 2 doors |
Vehicle Weight | 1855 kg | 1895 kg |
Vehicle Length | 5060 mm | 4830 mm |
Vehicle Width | 1900 mm | 1860 mm |
Vehicle Height | 1450 mm | 1380 mm |
Wheelbase Size | 2950 mm | 2790 mm |
Fuel Consumption Overall | 11.9 L/100km | 11.5 L/100km |
Fuel Tank Capacity | 90 L | 70 L |