1991 BMW 730 vs. 2007 BMW 320
To start off, 2007 BMW 320 is newer by 16 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 2007 BMW 320. (168 HP @ 6100 RPM). In normal driving conditions, 1991 BMW 730 should accelerate faster than 2007 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 1991 BMW 730 weights approximately 130 kg more than 2007 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, 1991 BMW 730 (260 Nm @ 4000 RPM) has 50 more torque (in Nm) than 2007 BMW 320. (210 Nm @ 3500 RPM). This means 1991 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 320.
Compare all specifications:
| 1991 BMW 730 | 2007 BMW 320 | |
| Make | BMW | BMW |
| Model | 730 | 320 |
| Year Released | 1991 | 2007 |
| Body Type | Sedan | Coupe |
| 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 | 80.1 mm |
| Engine Stroke Size | 80 mm | 72 mm |
| Engine Compression Ratio | 9.0:1 | 10.8:1 |
| 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 | 2 doors |
| Vehicle Weight | 1600 kg | 1470 kg |
| Vehicle Length | 4920 mm | 4490 mm |
| Vehicle Width | 1850 mm | 1760 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2840 mm | 2730 mm |
| Fuel Tank Capacity | 90 L | 63 L |
