2005 BMW 630 vs. 2004 BMW 645

To start off, 2005 BMW 630 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 BMW 645. In addition, the cost of maintenance, including insurance, on 2004 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 74 more horse power than 2005 BMW 630. (254 HP @ 6600 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 2005 BMW 630. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 125 kg more than 2005 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, 2004 BMW 645 (450 Nm @ 3600 RPM) has 160 more torque (in Nm) than 2005 BMW 630. (290 Nm @ 2500 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 630.

Compare all specifications:

2005 BMW 630 2004 BMW 645
Make BMW BMW
Model 630 645
Year Released 2005 2004
Body Type Coupe 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 254 HP 328 HP
Engine RPM 6600 RPM 6100 RPM
Torque 290 Nm 450 Nm
Torque RPM 2500 RPM 3600 RPM
Engine Compression Ratio 10.7:1 10.0:1
Fuel Type Gasoline - Premium Gasoline - Premium
Top Speed 245 km/hour 250 km/hour
Acceleration 0-100mph 6.5 seconds 5.6 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 1565 kg 1690 kg
Vehicle Length 4830 mm 4830 mm
Vehicle Width 1860 mm 1860 mm
Vehicle Height 1380 mm 1380 mm
Wheelbase Size 2730 mm 2830 mm
Fuel Consumption Overall 9.1 L/100km 12 L/100km
Fuel Tank Capacity 70 L 70 L