2009 BMW Z4 vs. 1991 Rover 820
To start off, 2009 BMW Z4 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Rover 820. In addition, the cost of maintenance, including insurance, on 1991 Rover 820 would be higher. At 3,246 cc (6 cylinders), 2009 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (338 HP @ 7900 RPM) has 158 more horse power than 1991 Rover 820. (180 HP @ 6000 RPM). In normal driving conditions, 2009 BMW Z4 should accelerate faster than 1991 Rover 820. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW Z4 weights approximately 77 kg more than 1991 Rover 820. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW Z4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2009 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 1991 Rover 820, being front wheel drive (FWD), will offer much better control with better grip. 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 Z4 (365 Nm @ 4900 RPM) has 150 more torque (in Nm) than 1991 Rover 820. (215 Nm @ 2000 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Rover 820.
Compare all specifications:
| 2009 BMW Z4 | 1991 Rover 820 | |
| Make | BMW | Rover |
| Model | Z4 | 820 |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 1994 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 338 HP | 180 HP |
| Engine RPM | 7900 RPM | 6000 RPM |
| Torque | 365 Nm | 215 Nm |
| Torque RPM | 4900 RPM | 2000 RPM |
| Engine Compression Ratio | 11.5:1 | 8.5:1 |
| Top Speed | 250 km/hour | 217 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1485 kg | 1408 kg |
| Vehicle Length | 4120 mm | 4890 mm |
| Vehicle Width | 1310 mm | 1740 mm |
| Vehicle Height | 1790 mm | 1400 mm |
| Wheelbase Size | 2500 mm | 2780 mm |
| Fuel Tank Capacity | 70 L | 68 L |
