1951 Alvis TA 21 vs. 1957 Rover P4
To start off, 1957 Rover P4 is newer by 6 year(s). Which means there will be less support and parts availability for 1951 Alvis TA 21. In addition, the cost of maintenance, including insurance, on 1951 Alvis TA 21 would be higher. At 2,993 cc (6 cylinders), 1951 Alvis TA 21 is equipped with a bigger engine. In terms of performance, both vehicles can yield 93 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 1951 Alvis TA 21 weights approximately 18 kg more than 1957 Rover P4.
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, 1957 Rover P4 (206 Nm @ 2500 RPM) has 2 more torque (in Nm) than 1951 Alvis TA 21. (204 Nm @ 2000 RPM). This means 1957 Rover P4 will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TA 21. 1957 Rover P4 has automatic transmission and 1951 Alvis TA 21 has manual transmission. 1951 Alvis TA 21 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1957 Rover P4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1951 Alvis TA 21 | 1957 Rover P4 | |
| Make | Alvis | Rover |
| Model | TA 21 | P4 |
| Year Released | 1951 | 1957 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2636 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 93 HP | 93 HP |
| Engine RPM | 4000 RPM | 4250 RPM |
| Torque | 204 Nm | 206 Nm |
| Torque RPM | 2000 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 73 mm |
| Engine Stroke Size | 90 mm | 105 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1448 kg | 1430 kg |
| Vehicle Length | 4630 mm | 4550 mm |
| Vehicle Width | 1680 mm | 1680 mm |
| Vehicle Height | 1600 mm | 1620 mm |
| Wheelbase Size | 2840 mm | 2830 mm |
| Fuel Tank Capacity | 64 L | 52 L |
