1951 Alvis TB 21 vs. 2003 Opel Astra
To start off, 2003 Opel Astra is newer by 52 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, 1951 Alvis TB 21 (91 HP @ 4000 RPM) has 17 more horse power than 2003 Opel Astra. (74 HP @ 5200 RPM). In normal driving conditions, 1951 Alvis TB 21 should accelerate faster than 2003 Opel Astra.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 74 more torque (in Nm) than 2003 Opel Astra. (130 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Astra.
Compare all specifications:
| 1951 Alvis TB 21 | 2003 Opel Astra | |
| Make | Alvis | Opel |
| Model | TB 21 | Astra |
| Year Released | 1951 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1596 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 74 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 204 Nm | 130 Nm |
| Engine Bore Size | 84 mm | 85 mm |
| Engine Stroke Size | 90 mm | 69.8 mm |
| Engine Compression Ratio | 7.1:1 | 9.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4260 mm |
| Vehicle Width | 1680 mm | 1760 mm |
| Wheelbase Size | 2750 mm | 2640 mm |
