1952 Alvis TB 21 vs. 1958 Rover P4
To start off, 1958 Rover P4 is newer by 6 year(s). Which means there will be less support and parts availability for 1952 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1952 Alvis TB 21 would be higher. At 2,992 cc (6 cylinders), 1952 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 1952 Alvis TB 21 (91 HP @ 4000 RPM) has 12 more horse power than 1958 Rover P4. (79 HP @ 4500 RPM). In normal driving conditions, 1952 Alvis TB 21 should accelerate faster than 1958 Rover P4.
Let's talk about torque, 1952 Alvis TB 21 (204 Nm @ 2200 RPM) has 16 more torque (in Nm) than 1958 Rover P4. (188 Nm @ 1750 RPM). This means 1952 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1958 Rover P4.
Compare all specifications:
| 1952 Alvis TB 21 | 1958 Rover P4 | |
| Make | Alvis | Rover |
| Model | TB 21 | P4 |
| Year Released | 1952 | 1958 |
| Engine Position | Front | Front |
| Engine Size | 2992 cc | 2636 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 79 HP |
| Engine RPM | 4000 RPM | 4500 RPM |
| Torque | 204 Nm | 188 Nm |
| Torque RPM | 2200 RPM | 1750 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4550 mm |
| Vehicle Width | 1680 mm | 1680 mm |
| Wheelbase Size | 2750 mm | 2830 mm |
