2003 Alpina B3 vs. 1951 Alvis TB 21
To start off, 2003 Alpina B3 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 3,344 cc (6 cylinders), 2003 Alpina B3 is equipped with a bigger engine. In terms of performance, 2003 Alpina B3 (301 HP @ 6200 RPM) has 210 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM). In normal driving conditions, 2003 Alpina B3 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2003 Alpina B3 (362 Nm) has 158 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2003 Alpina B3 will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TB 21.
Compare all specifications:
| 2003 Alpina B3 | 1951 Alvis TB 21 | |
| Make | Alpina | Alvis |
| Model | B3 | TB 21 |
| Year Released | 2003 | 1951 |
| Engine Position | Front | Front |
| Engine Size | 3344 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 301 HP | 91 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 362 Nm | 204 Nm |
| Engine Bore Size | 87 mm | 84 mm |
| Engine Stroke Size | 93.8 mm | 90 mm |
| Engine Compression Ratio | 10.0:1 | 7.1:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Length | 4490 mm | 4430 mm |
| Vehicle Width | 1760 mm | 1680 mm |
| Wheelbase Size | 2730 mm | 2750 mm |
