1991 BMW 730 vs. 2000 BMW 520
To start off, 2000 BMW 520 is newer by 9 year(s). Which means there will be less support and parts availability for 1991 BMW 730. In addition, the cost of maintenance, including insurance, on 1991 BMW 730 would be higher. At 2,986 cc (6 cylinders), 1991 BMW 730 is equipped with a bigger engine. In terms of performance, 1991 BMW 730 (185 HP @ 5800 RPM) has 17 more horse power than 2000 BMW 520. (168 HP @ 6100 RPM). In normal driving conditions, 1991 BMW 730 should accelerate faster than 2000 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2000 BMW 520 weights approximately 70 kg more than 1991 BMW 730.
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, 1991 BMW 730 (260 Nm @ 4000 RPM) has 50 more torque (in Nm) than 2000 BMW 520. (210 Nm @ 3500 RPM). This means 1991 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2000 BMW 520.
Compare all specifications:
| 1991 BMW 730 | 2000 BMW 520 | |
| Make | BMW | BMW |
| Model | 730 | 520 |
| Year Released | 1991 | 2000 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 2171 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 185 HP | 168 HP |
| Engine RPM | 5800 RPM | 6100 RPM |
| Torque | 260 Nm | 210 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 89 mm | 80 mm |
| Engine Stroke Size | 80 mm | 72 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1600 kg | 1670 kg |
| Vehicle Length | 4920 mm | 4810 mm |
| Vehicle Width | 1850 mm | 1810 mm |
| Vehicle Height | 1420 mm | 1450 mm |
| Wheelbase Size | 2840 mm | 2840 mm |
| Fuel Tank Capacity | 90 L | 70 L |
