2007 BMW 645 vs. 2009 BMW 330
To start off, 2009 BMW 330 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW 645. In addition, the cost of maintenance, including insurance, on 2007 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 74 more horse power than 2009 BMW 330. (254 HP @ 6600 RPM). In normal driving conditions, 2007 BMW 645 should accelerate faster than 2009 BMW 330. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 160 kg more than 2009 BMW 330. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW 330 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 645. In wet, icy, snow, or gravel driving conditions, 2009 BMW 330 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 645 (450 Nm @ 3600 RPM) has 149 more torque (in Nm) than 2009 BMW 330. (301 Nm @ 2500 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 330.
Compare all specifications:
| 2007 BMW 645 | 2009 BMW 330 | |
| Make | BMW | BMW |
| Model | 645 | 330 |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2996 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 254 HP |
| Engine RPM | 6100 RPM | 6600 RPM |
| Torque | 450 Nm | 301 Nm |
| Torque RPM | 3600 RPM | 2500 RPM |
| Engine Bore Size | 92 mm | 85 mm |
| Engine Stroke Size | 82.7 mm | 88 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 6.4 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1655 kg |
| Vehicle Length | 4830 mm | 4530 mm |
| Vehicle Width | 1860 mm | 1820 mm |
| Vehicle Height | 1380 mm | 1430 mm |
| Wheelbase Size | 2790 mm | 2770 mm |
| Fuel Consumption Overall | 13 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
