2009 BMW 320 vs. 1991 BMW 730
To start off, 2009 BMW 320 is newer by 18 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 37 more horse power than 2009 BMW 320. (148 HP @ 4000 RPM) In normal driving conditions, 1991 BMW 730 should accelerate faster than 2009 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 1991 BMW 730 weights approximately 20 kg more than 2009 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, 2009 BMW 320 (331 Nm @ 2000 RPM) has 71 more torque (in Nm) than 1991 BMW 730. (260 Nm @ 4000 RPM). This means 2009 BMW 320 will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW 730.
Compare all specifications:
| 2009 BMW 320 | 1991 BMW 730 | |
| Make | BMW | BMW |
| Model | 320 | 730 |
| Year Released | 2009 | 1991 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2986 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 185 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 331 Nm | 260 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 90 mm | 80 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1580 kg | 1600 kg |
| Vehicle Length | 4480 mm | 4920 mm |
| Vehicle Width | 1750 mm | 1850 mm |
| Vehicle Height | 1420 mm | 1420 mm |
| Wheelbase Size | 2730 mm | 2840 mm |
| Fuel Tank Capacity | 63 L | 90 L |
