2007 BMW 330 vs. 2008 BMW 645
To start off, 2008 BMW 645 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 BMW 330. In addition, the cost of maintenance, including insurance, on 2007 BMW 330 would be higher. At 4,398 cc (8 cylinders), 2008 BMW 645 is equipped with a bigger engine. In terms of performance, 2008 BMW 645 (328 HP @ 6100 RPM) has 113 more horse power than 2007 BMW 330. (215 HP @ 4000 RPM) In normal driving conditions, 2008 BMW 645 should accelerate faster than 2007 BMW 330. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 645 weights approximately 150 kg more than 2007 BMW 330. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2007 BMW 330 (480 Nm @ 1750 RPM) has 30 more torque (in Nm) than 2008 BMW 645. (450 Nm @ 3600 RPM). This means 2007 BMW 330 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 645. 2007 BMW 330 has automatic transmission and 2008 BMW 645 has manual transmission. 2008 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW 330 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW 330 | 2008 BMW 645 | |
| Make | BMW | BMW |
| Model | 330 | 645 |
| Year Released | 2007 | 2008 |
| Body Type | Sedan | 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 | 215 HP | 328 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 480 Nm | 450 Nm |
| Torque RPM | 1750 RPM | 3600 RPM |
| Engine Bore Size | 84 mm | 92.1 mm |
| Engine Stroke Size | 90 mm | 82.7 mm |
| Engine Compression Ratio | 17.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1540 kg | 1690 kg |
| Vehicle Length | 4530 mm | 4830 mm |
| Vehicle Width | 1430 mm | 1860 mm |
| Vehicle Height | 1820 mm | 1380 mm |
| Wheelbase Size | 2770 mm | 2790 mm |
| Fuel Consumption Overall | 7.6 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 60 L | 70 L |
