1951 Alvis TB 21 vs. 1969 Opel Commodore
To start off, 1969 Opel Commodore is newer by 18 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 2,993 cc (6 cylinders), 1951 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 1969 Opel Commodore (115 HP @ 5200 RPM) has 24 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1969 Opel Commodore should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 27 more torque (in Nm) than 1969 Opel Commodore. (177 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1969 Opel Commodore.
Compare all specifications:
| 1951 Alvis TB 21 | 1969 Opel Commodore | |
| Make | Alvis | Opel |
| Model | TB 21 | Commodore |
| Year Released | 1951 | 1969 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2490 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 115 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 204 Nm | 177 Nm |
| Engine Bore Size | 84 mm | 87 mm |
| Engine Stroke Size | 90 mm | 69.8 mm |
| Engine Compression Ratio | 7.1:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4620 mm |
| Vehicle Width | 1680 mm | 1740 mm |
| Wheelbase Size | 2750 mm | 2680 mm |
