2003 BMW 645 vs. 2009 Bugatti Veyron
To start off, 2009 Bugatti Veyron 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 7,993 cc (16 cylinders), 2009 Bugatti Veyron is equipped with a bigger engine. In terms of performance, 2009 Bugatti Veyron (987 HP @ 6000 RPM) has 666 more horse power than 2003 BMW 645. (321 HP @ 6100 RPM) In normal driving conditions, 2009 Bugatti Veyron should accelerate faster than 2003 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 8 kg more than 2009 Bugatti Veyron.
Because 2009 Bugatti Veyron 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 Bugatti Veyron 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 Bugatti Veyron (1,250 Nm @ 2200 RPM) has 800 more torque (in Nm) than 2003 BMW 645. (450 Nm @ 3600 RPM). This means 2009 Bugatti Veyron will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 645.
Compare all specifications:
| 2003 BMW 645 | 2009 Bugatti Veyron | |
| Make | BMW | Bugatti |
| Model | 645 | Veyron |
| Year Released | 2003 | 2009 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 4398 cc | 7993 cc |
| Engine Cylinders | 8 cylinders | 16 cylinders |
| Engine Type | V | W |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 987 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 450 Nm | 1250 Nm |
| Torque RPM | 3600 RPM | 2200 RPM |
| Engine Bore Size | 92 mm | 86 mm |
| Engine Stroke Size | 82.7 mm | 86 mm |
| Engine Compression Ratio | 10.5:1 | 9.0:1 |
| Top Speed | 250 km/hour | 408 km/hour |
| Acceleration 0-100mph | 6.2 seconds | 2.5 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1895 kg | 1887 kg |
| Vehicle Length | 4830 mm | 4470 mm |
| Vehicle Width | 1860 mm | 2010 mm |
| Vehicle Height | 1380 mm | 1220 mm |
| Wheelbase Size | 2790 mm | 2710 mm |
| Fuel Consumption | 8.5 L/100km | 18 L/100km |
| Fuel Consumption City | 16.8 L/100km | 29 L/100km |
