2003 BMW X3 vs. 2005 BMW 645
To start off, 2005 BMW 645 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 BMW X3. In addition, the cost of maintenance, including insurance, on 2003 BMW X3 would be higher. At 4,392 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (326 HP @ 6100 RPM) has 125 more horse power than 2003 BMW X3. (201 HP @ 4000 RPM) In normal driving conditions, 2005 BMW 645 should accelerate faster than 2003 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW X3 weights approximately 35 kg more than 2005 BMW 645.
Because 2003 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2005 BMW 645. In wet, icy, snow, or gravel driving conditions, 2003 BMW X3 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, 2005 BMW 645 (447 Nm @ 3600 RPM) has 37 more torque (in Nm) than 2003 BMW X3. (410 Nm @ 1500 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW X3.
Compare all specifications:
2003 BMW X3 | 2005 BMW 645 | |
Make | BMW | BMW |
Model | X3 | 645 |
Year Released | 2003 | 2005 |
Body Type | SUV | Convertible |
Engine Position | Front | Front |
Engine Size | 2995 cc | 4392 cc |
Engine Cylinders | 6 cylinders | 8 cylinders |
Engine Type | in-line | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 201 HP | 326 HP |
Engine RPM | 4000 RPM | 6100 RPM |
Torque | 410 Nm | 447 Nm |
Torque RPM | 1500 RPM | 3600 RPM |
Engine Bore Size | 84 mm | 92 mm |
Engine Stroke Size | 90 mm | 83 mm |
Engine Compression Ratio | 17.0:1 | 10.5:1 |
Top Speed | 215 km/hour | 250 km/hour |
Acceleration 0-100mph | 8.2 seconds | 6.1 seconds |
Drive Type | 4WD | Rear |
Transmission Type | Automatic | Automatic |
Number of Seats | 5 seats | 4 seats |
Number of Doors | 5 doors | 2 doors |
Vehicle Weight | 1930 kg | 1895 kg |
Vehicle Length | 4570 mm | 4830 mm |
Vehicle Width | 1860 mm | 1860 mm |
Vehicle Height | 1680 mm | 1380 mm |
Wheelbase Size | 2730 mm | 2890 mm |
Fuel Consumption | 7.3 L/100km | 10.2 L/100km |
Fuel Consumption City | 12.1 L/100km | 15.7 L/100km |
Fuel Consumption Overall | 9.1 L/100km | 12.8 L/100km |
Fuel Tank Capacity | 67 L | 70 L |