2006 Infiniti QX56 vs. 1973 Rover P5B
To start off, 2006 Infiniti QX56 is newer by 33 year(s). Which means there will be less support and parts availability for 1973 Rover P5B. In addition, the cost of maintenance, including insurance, on 1973 Rover P5B would be higher. At 5,555 cc (8 cylinders), 2006 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2006 Infiniti QX56 (315 HP @ 4900 RPM) has 157 more horse power than 1973 Rover P5B. (158 HP @ 5200 RPM). In normal driving conditions, 2006 Infiniti QX56 should accelerate faster than 1973 Rover P5B. With that said, vehicle weight also plays an important factor in acceleration. 1973 Rover P5B weights approximately 270 kg more than 2006 Infiniti QX56.
Because 2006 Infiniti QX56 is four wheel drive (4WD), it will have significant more traction and grip than 1973 Rover P5B. In wet, icy, snow, or gravel driving conditions, 2006 Infiniti QX56 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, 2006 Infiniti QX56 (529 Nm @ 3600 RPM) has 234 more torque (in Nm) than 1973 Rover P5B. (295 Nm @ 3000 RPM). This means 2006 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 1973 Rover P5B.
Compare all specifications:
| 2006 Infiniti QX56 | 1973 Rover P5B | |
| Make | Infiniti | Rover |
| Model | QX56 | P5B |
| Year Released | 2006 | 1973 |
| Engine Size | 5555 cc | 3526 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Horse Power | 315 HP | 158 HP |
| Engine RPM | 4900 RPM | 5200 RPM |
| Torque | 529 Nm | 295 Nm |
| Torque RPM | 3600 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Vehicle Weight | 1320 kg | 1590 kg |
| Vehicle Length | 5260 mm | 4750 mm |
| Vehicle Width | 2010 mm | 1790 mm |
| Vehicle Height | 1980 mm | 1550 mm |
| Wheelbase Size | 3140 mm | 2820 mm |
