1951 Alvis TB 21 vs. 1959 Rover P5
To start off, 1959 Rover P5 is newer by 8 year(s). Which means there will be less support and parts availability for 1951 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1951 Alvis TB 21 would be higher. At 2,995 cc (6 cylinders), 1959 Rover P5 is equipped with a bigger engine. In terms of performance, 1959 Rover P5 (106 HP @ 4500 RPM) has 15 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1959 Rover P5 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1959 Rover P5 (222 Nm) has 18 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 1959 Rover P5 will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TB 21.
Compare all specifications:
| 1951 Alvis TB 21 | 1959 Rover P5 | |
| Make | Alvis | Rover |
| Model | TB 21 | P5 |
| Year Released | 1951 | 1959 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2995 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 106 HP |
| Engine RPM | 4000 RPM | 4500 RPM |
| Torque | 204 Nm | 222 Nm |
| Engine Bore Size | 84 mm | 77.8 mm |
| Engine Stroke Size | 90 mm | 105 mm |
| Engine Compression Ratio | 7.1:1 | 8.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4750 mm |
| Vehicle Width | 1680 mm | 1790 mm |
| Wheelbase Size | 2750 mm | 2820 mm |
