1951 Alvis TB 21 vs. 2004 Opel Vectra
To start off, 2004 Opel Vectra is newer by 53 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, 2004 Opel Vectra (174 HP @ 4000 RPM) has 83 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2004 Opel Vectra should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2004 Opel Vectra (370 Nm) has 166 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2004 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 | 2004 Opel Vectra | |
| Make | Alvis | Opel |
| Model | TB 21 | Vectra |
| Year Released | 1951 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 174 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 204 Nm | 370 Nm |
| Engine Bore Size | 84 mm | 87.5 mm |
| Engine Stroke Size | 90 mm | 82 mm |
| Engine Compression Ratio | 7.1:1 | 18.5:1 |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4830 mm |
| Vehicle Width | 1680 mm | 1770 mm |
| Wheelbase Size | 2750 mm | 2700 mm |
