2005 BMW X5 vs. 1971 Rover P6
To start off, 2005 BMW X5 is newer by 34 year(s). Which means there will be less support and parts availability for 1971 Rover P6. In addition, the cost of maintenance, including insurance, on 1971 Rover P6 would be higher. At 3,532 cc (8 cylinders), 1971 Rover P6 is equipped with a bigger engine. In terms of performance, 2005 BMW X5 (215 HP @ 4000 RPM) has 65 more horse power than 1971 Rover P6. (150 HP @ 5000 RPM). In normal driving conditions, 2005 BMW X5 should accelerate faster than 1971 Rover P6. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X5 weights approximately 875 kg more than 1971 Rover P6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1971 Rover P6. In wet, icy, snow, or gravel driving conditions, 2005 BMW X5 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, 2005 BMW X5 (520 Nm @ 2000 RPM) has 246 more torque (in Nm) than 1971 Rover P6. (274 Nm @ 2750 RPM). This means 2005 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1971 Rover P6.
Compare all specifications:
| 2005 BMW X5 | 1971 Rover P6 | |
| Make | BMW | Rover |
| Model | X5 | P6 |
| Year Released | 2005 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 2926 cc | 3532 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 215 HP | 150 HP |
| Engine RPM | 4000 RPM | 5000 RPM |
| Torque | 520 Nm | 274 Nm |
| Torque RPM | 2000 RPM | 2750 RPM |
| Engine Bore Size | 84 mm | 88.9 mm |
| Engine Stroke Size | 90 mm | 71.1 mm |
| Top Speed | 210 km/hour | 192 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2170 kg | 1295 kg |
| Vehicle Length | 4670 mm | 4570 mm |
| Vehicle Width | 1880 mm | 1680 mm |
| Vehicle Height | 1720 mm | 1430 mm |
| Wheelbase Size | 2830 mm | 2630 mm |
