1991 Rover 100 vs. 2009 BMW 525
To start off, 2009 BMW 525 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Rover 100. In addition, the cost of maintenance, including insurance, on 1991 Rover 100 would be higher. At 2,497 cc (6 cylinders), 2009 BMW 525 is equipped with a bigger engine. In terms of performance, 2009 BMW 525 (175 HP @ 4000 RPM) has 73 more horse power than 1991 Rover 100. (102 HP @ 6000 RPM) In normal driving conditions, 2009 BMW 525 should accelerate faster than 1991 Rover 100. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 525 weights approximately 880 kg more than 1991 Rover 100. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 BMW 525 (400 Nm @ 2000 RPM) has 265 more torque (in Nm) than 1991 Rover 100. (135 Nm @ 5000 RPM). This means 2009 BMW 525 will have an easier job in driving up hills or pulling heavy equipment than 1991 Rover 100.
Compare all specifications:
| 1991 Rover 100 | 2009 BMW 525 | |
| Make | Rover | BMW |
| Model | 100 | 525 |
| Year Released | 1991 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 1396 cc | 2497 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 102 HP | 175 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 135 Nm | 400 Nm |
| Torque RPM | 5000 RPM | 2000 RPM |
| Engine Bore Size | 75 mm | 84.1 mm |
| Engine Stroke Size | 79 mm | 75.1 mm |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 870 kg | 1750 kg |
| Vehicle Length | 3530 mm | 4850 mm |
| Vehicle Width | 1570 mm | 1850 mm |
| Vehicle Height | 1380 mm | 1500 mm |
