1970 Riley 4 vs. 1973 Rover P5B
To start off, 1973 Rover P5B is newer by 3 year(s). Which means there will be less support and parts availability for 1970 Riley 4. In addition, the cost of maintenance, including insurance, on 1970 Riley 4 would be higher. At 3,528 cc (8 cylinders), 1973 Rover P5B is equipped with a bigger engine. In terms of performance, 1973 Rover P5B (158 HP @ 5200 RPM) has 91 more horse power than 1970 Riley 4. (67 HP @ 5000 RPM) In normal driving conditions, 1973 Rover P5B should accelerate faster than 1970 Riley 4. With that said, vehicle weight also plays an important factor in acceleration. 1973 Rover P5B weights approximately 432 kg more than 1970 Riley 4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 1973 Rover P5B (295 Nm @ 3000 RPM) has 175 more torque (in Nm) than 1970 Riley 4. (120 Nm @ 2500 RPM). This means 1973 Rover P5B will have an easier job in driving up hills or pulling heavy equipment than 1970 Riley 4.
Compare all specifications:
| 1970 Riley 4 | 1973 Rover P5B | |
| Make | Riley | Rover |
| Model | 4 | P5B |
| Year Released | 1970 | 1973 |
| Body Type | Sedan | Coupe |
| Engine Size | 1622 cc | 3528 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 67 HP | 158 HP |
| Engine RPM | 5000 RPM | 5200 RPM |
| Torque | 120 Nm | 295 Nm |
| Torque RPM | 2500 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Vehicle Weight | 1148 kg | 1580 kg |
| Vehicle Length | 4540 mm | 4750 mm |
| Vehicle Width | 1620 mm | 1790 mm |
| Vehicle Height | 1510 mm | 1480 mm |
| Wheelbase Size | 2530 mm | 2820 mm |
