2007 BMW X3 vs. 2006 BMW 645

To start off, 2007 BMW X3 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 45 more horse power than 2007 BMW X3. (283 HP @ 4400 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 2007 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 140 kg more than 2006 BMW 645.

Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW 645. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 BMW X3 (580 Nm @ 1750 RPM) has 130 more torque (in Nm) than 2006 BMW 645. (450 Nm @ 3600 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 645.

Compare all specifications:

2007 BMW X3 2006 BMW 645
Make BMW BMW
Model X3 645
Year Released 2007 2006
Body Type SUV Coupe
Engine Position Front Front
Engine Size 2993 cc 4398 cc
Engine Cylinders 6 cylinders 8 cylinders
Engine Type in-line V
Valves per Cylinder 4 valves 4 valves
Horse Power 283 HP 328 HP
Engine RPM 4400 RPM 6100 RPM
Torque 580 Nm 450 Nm
Torque RPM 1750 RPM 3600 RPM
Engine Compression Ratio 17.0:1 10.0:1
Fuel Type Diesel Gasoline
Top Speed 240 km/hour 250 km/hour
Acceleration 0-100mph 6.6 seconds 5.6 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 1950 kg 1810 kg
Vehicle Length 4570 mm 4830 mm
Vehicle Width 1860 mm 1860 mm
Vehicle Height 1680 mm 1380 mm
Wheelbase Size 2800 mm 2790 mm
Fuel Consumption Overall 8.7 L/100km 13.3 L/100km
Fuel Tank Capacity 67 L 70 L


 

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