1951 Alvis TB 21 vs. 2001 Opel Vectra
To start off, 2001 Opel Vectra is newer by 50 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, 2001 Opel Vectra (123 HP @ 4000 RPM) has 32 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2001 Opel Vectra should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2001 Opel Vectra (280 Nm) has 76 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2001 Opel Vectra 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 | 2001 Opel Vectra | |
| Make | Alvis | Opel |
| Model | TB 21 | Vectra |
| Year Released | 1951 | 2001 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2172 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 91 HP | 123 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 204 Nm | 280 Nm |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 90 mm | 98 mm |
| Engine Compression Ratio | 7.1:1 | 18.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4500 mm |
| Vehicle Width | 1680 mm | 1800 mm |
| Wheelbase Size | 2750 mm | 2840 mm |
