2007 BMW 645 vs. 2000 BMW 730
To start off, 2007 BMW 645 is newer by 7 year(s). Which means there will be less support and parts availability for 2000 BMW 730. In addition, the cost of maintenance, including insurance, on 2000 BMW 730 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 138 more horse power than 2000 BMW 730. (190 HP @ 5300 RPM). In normal driving conditions, 2007 BMW 645 should accelerate faster than 2000 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2000 BMW 730 weights approximately 55 kg more than 2007 BMW 645.
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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 170 more torque (in Nm) than 2000 BMW 730. (280 Nm @ 3950 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2000 BMW 730.
Compare all specifications:
| 2007 BMW 645 | 2000 BMW 730 | |
| Make | BMW | BMW |
| Model | 645 | 730 |
| Year Released | 2007 | 2000 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2792 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 190 HP |
| Engine RPM | 6100 RPM | 5300 RPM |
| Torque | 450 Nm | 280 Nm |
| Torque RPM | 3600 RPM | 3950 RPM |
| Engine Compression Ratio | 10.0:1 | 10.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1690 kg | 1745 kg |
| Vehicle Length | 4830 mm | 5130 mm |
| Vehicle Width | 1860 mm | 1870 mm |
| Vehicle Height | 1380 mm | 1430 mm |
| Wheelbase Size | 2790 mm | 2950 mm |
| Fuel Tank Capacity | 70 L | 90 L |
