1992 BMW 730 vs. 2004 BMW 645
To start off, 2004 BMW 645 is newer by 12 year(s). Which means there will be less support and parts availability for 1992 BMW 730. In addition, the cost of maintenance, including insurance, on 1992 BMW 730 would be higher. At 4,392 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (322 HP @ 7400 RPM) has 141 more horse power than 1992 BMW 730. (181 HP @ 5800 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 1992 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 115 kg more than 1992 BMW 730. 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 (447 Nm) has 187 more torque (in Nm) than 1992 BMW 730. (260 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1992 BMW 730.
Compare all specifications:
| 1992 BMW 730 | 2004 BMW 645 | |
| Make | BMW | BMW |
| Model | 730 | 645 |
| Year Released | 1992 | 2004 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2984 cc | 4392 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 181 HP | 322 HP |
| Engine RPM | 5800 RPM | 7400 RPM |
| Torque | 260 Nm | 447 Nm |
| Engine Bore Size | 89 mm | 92 mm |
| Engine Stroke Size | 80 mm | 83 mm |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1600 kg | 1715 kg |
| Vehicle Length | 4920 mm | 4840 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2840 mm | 2790 mm |
| Fuel Tank Capacity | 90 L | 70 L |
