2009 BMW 528 vs. 1991 BMW 730
To start off, 2009 BMW 528 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 2,996 cc (6 cylinders), 2009 BMW 528 is equipped with a bigger engine. In terms of performance, 2009 BMW 528 (230 HP @ 6500 RPM) has 45 more horse power than 1991 BMW 730. (185 HP @ 5800 RPM). In normal driving conditions, 2009 BMW 528 should accelerate faster than 1991 BMW 730.
Because 2009 BMW 528 is four wheel drive (4WD), it will have significant more traction and grip than 1991 BMW 730. In wet, icy, snow, or gravel driving conditions, 2009 BMW 528 will offer significantly more control. 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 528 (271 Nm @ 2750 RPM) has 11 more torque (in Nm) than 1991 BMW 730. (260 Nm @ 4000 RPM). This means 2009 BMW 528 will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW 730.
Compare all specifications:
| 2009 BMW 528 | 1991 BMW 730 | |
| Make | BMW | BMW |
| Model | 528 | 730 |
| Year Released | 2009 | 1991 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 2986 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 230 HP | 185 HP |
| Engine RPM | 6500 RPM | 5800 RPM |
| Torque | 271 Nm | 260 Nm |
| Torque RPM | 2750 RPM | 4000 RPM |
| Engine Compression Ratio | 10.2:1 | 9.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4860 mm | 4920 mm |
| Vehicle Width | 1850 mm | 1850 mm |
| Vehicle Height | 1490 mm | 1420 mm |
| Wheelbase Size | 2890 mm | 2840 mm |
| Fuel Tank Capacity | 70 L | 90 L |
