1999 BMW 730 vs. 1991 BMW 320
To start off, 1999 BMW 730 is newer by 8 year(s). Which means there will be less support and parts availability for 1991 BMW 320. In addition, the cost of maintenance, including insurance, on 1991 BMW 320 would be higher. At 2,793 cc (6 cylinders), 1999 BMW 730 is equipped with a bigger engine. In terms of performance, 1999 BMW 730 (190 HP @ 5300 RPM) has 41 more horse power than 1991 BMW 320. (149 HP @ 5900 RPM). In normal driving conditions, 1999 BMW 730 should accelerate faster than 1991 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 1999 BMW 730 weights approximately 476 kg more than 1991 BMW 320. 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, 1999 BMW 730 (280 Nm @ 3950 RPM) has 90 more torque (in Nm) than 1991 BMW 320. (190 Nm @ 4200 RPM). This means 1999 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW 320.
Compare all specifications:
| 1999 BMW 730 | 1991 BMW 320 | |
| Make | BMW | BMW |
| Model | 730 | 320 |
| Year Released | 1999 | 1991 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2793 cc | 1991 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 190 HP | 149 HP |
| Engine RPM | 5300 RPM | 5900 RPM |
| Torque | 280 Nm | 190 Nm |
| Torque RPM | 3950 RPM | 4200 RPM |
| Engine Bore Size | 84 mm | 80 mm |
| Engine Stroke Size | 84 mm | 66 mm |
| Engine Compression Ratio | 10.2:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1746 kg | 1270 kg |
| Vehicle Length | 5130 mm | 4450 mm |
| Vehicle Width | 1870 mm | 1710 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2940 mm | 2710 mm |
| Fuel Tank Capacity | 90 L | 65 L |
