2006 BMW 630 vs. 2005 BMW 645

To start off, 2006 BMW 630 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW 645. In addition, the cost of maintenance, including insurance, on 2005 BMW 645 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 72 more horse power than 2006 BMW 630. (254 HP @ 6600 RPM) In normal driving conditions, 2005 BMW 645 should accelerate faster than 2006 BMW 630. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 135 kg more than 2006 BMW 630. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.

Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 147 more torque (in Nm) than 2006 BMW 630. (300 Nm @ 2500 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 630.

Compare all specifications:

2006 BMW 630 2005 BMW 645
Make BMW BMW
Model 630 645
Year Released 2006 2005
Body Type Convertible Convertible
Engine Position Front Front
Engine Size 2996 cc 4392 cc
Engine Cylinders 6 cylinders 8 cylinders
Engine Type in-line V
Valves per Cylinder 4 valves 4 valves
Horse Power 254 HP 326 HP
Engine RPM 6600 RPM 6100 RPM
Torque 300 Nm 447 Nm
Torque RPM 2500 RPM 3600 RPM
Engine Bore Size 85 mm 92 mm
Engine Stroke Size 88 mm 83 mm
Engine Compression Ratio 10.7:1 10.5:1
Fuel Type Gasoline - Premium Gasoline - Premium
Top Speed 250 km/hour 250 km/hour
Acceleration 0-100mph 7.2 seconds 6.1 seconds
Drive Type Rear Rear
Transmission Type Automatic Automatic
Number of Seats 4 seats 4 seats
Number of Doors 2 doors 2 doors
Vehicle Weight 1760 kg 1895 kg
Vehicle Length 4830 mm 4830 mm
Vehicle Width 1860 mm 1860 mm
Vehicle Height 1380 mm 1380 mm
Wheelbase Size 2790 mm 2890 mm
Fuel Consumption Overall 9.6 L/100km 12.8 L/100km
Fuel Tank Capacity 70 L 70 L


 

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