2003 BMW 645 vs. 2009 BMW X6
To start off, 2009 BMW X6 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, 2003 BMW 645 (321 HP @ 6100 RPM) has 21 more horse power than 2009 BMW X6. (300 HP @ 5800 RPM). In normal driving conditions, 2003 BMW 645 should accelerate faster than 2009 BMW X6. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW X6 weights approximately 250 kg more than 2003 BMW 645.
Because 2009 BMW X6 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 BMW X6 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 43 more torque (in Nm) than 2009 BMW X6. (407 Nm @ 1400 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW X6.
Compare all specifications:
2003 BMW 645 | 2009 BMW X6 | |
Make | BMW | BMW |
Model | 645 | X6 |
Year Released | 2003 | 2009 |
Body Type | Convertible | SUV |
Engine Position | Front | Front |
Engine Size | 4398 cc | 2977 cc |
Engine Cylinders | 8 cylinders | 6 cylinders |
Engine Type | V | in-line |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 321 HP | 300 HP |
Engine RPM | 6100 RPM | 5800 RPM |
Torque | 450 Nm | 407 Nm |
Torque RPM | 3600 RPM | 1400 RPM |
Engine Bore Size | 92 mm | 84 mm |
Engine Stroke Size | 82.7 mm | 89.6 mm |
Engine Compression Ratio | 10.5:1 | 10.2:1 |
Top Speed | 250 km/hour | 240 km/hour |
Acceleration 0-100mph | 6.2 seconds | 6.7 seconds |
Drive Type | Rear | 4WD |
Transmission Type | Automatic | Automatic |
Number of Seats | 4 seats | 4 seats |
Number of Doors | 2 doors | 5 doors |
Vehicle Weight | 1895 kg | 2145 kg |
Vehicle Length | 4830 mm | 4880 mm |
Vehicle Width | 1860 mm | 1990 mm |
Vehicle Height | 1380 mm | 1700 mm |
Wheelbase Size | 2790 mm | 2940 mm |
Fuel Consumption | 8.5 L/100km | 11.8 L/100km |
Fuel Consumption City | 16.8 L/100km | 15.7 L/100km |
Fuel Consumption Overall | 11.5 L/100km | 10.9 L/100km |
Fuel Tank Capacity | 70 L | 85 L |