1981 Holden Commodore vs. 1956 Rover P4
To start off, 1981 Holden Commodore is newer by 25 year(s). Which means there will be less support and parts availability for 1956 Rover P4. In addition, the cost of maintenance, including insurance, on 1956 Rover P4 would be higher. At 4,142 cc (8 cylinders), 1981 Holden Commodore is equipped with a bigger engine. In terms of performance, 1981 Holden Commodore (134 HP @ 4200 RPM) has 26 more horse power than 1956 Rover P4. (108 HP @ 4250 RPM). In normal driving conditions, 1981 Holden Commodore should accelerate faster than 1956 Rover P4. With that said, vehicle weight also plays an important factor in acceleration. 1956 Rover P4 weights approximately 98 kg more than 1981 Holden Commodore.
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, 1981 Holden Commodore (270 Nm @ 2000 RPM) has 64 more torque (in Nm) than 1956 Rover P4. (206 Nm @ 2500 RPM). This means 1981 Holden Commodore will have an easier job in driving up hills or pulling heavy equipment than 1956 Rover P4. 1981 Holden Commodore has automatic transmission and 1956 Rover P4 has manual transmission. 1956 Rover P4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1981 Holden Commodore will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1981 Holden Commodore | 1956 Rover P4 | |
| Make | Holden | Rover |
| Model | Commodore | P4 |
| Year Released | 1981 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 4142 cc | 2636 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 134 HP | 108 HP |
| Engine RPM | 4200 RPM | 4250 RPM |
| Torque | 270 Nm | 206 Nm |
| Torque RPM | 2000 RPM | 2500 RPM |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1350 kg | 1448 kg |
| Vehicle Length | 4710 mm | 4530 mm |
| Vehicle Width | 1730 mm | 1670 mm |
| Vehicle Height | 1370 mm | 1320 mm |
| Wheelbase Size | 2670 mm | 2830 mm |
