1951 Alvis TB 21 vs. 1948 Alvis TB 14
To start off, 1951 Alvis TB 21 is newer by 3 year(s). Which means there will be less support and parts availability for 1948 Alvis TB 14. In addition, the cost of maintenance, including insurance, on 1948 Alvis TB 14 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 24 more horse power than 1948 Alvis TB 14. (67 HP @ 4000 RPM). In normal driving conditions, 1951 Alvis TB 21 should accelerate faster than 1948 Alvis TB 14.
Compare all specifications:
| 1951 Alvis TB 21 | 1948 Alvis TB 14 | |
| Make | Alvis | Alvis |
| Model | TB 21 | TB 14 |
| Year Released | 1951 | 1948 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1892 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 67 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 74.1 mm |
| Engine Stroke Size | 90 mm | 110 mm |
| Engine Compression Ratio | 7.1:1 | 6.7:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Length | 4430 mm | 4450 mm |
| Vehicle Width | 1680 mm | 1700 mm |
| Wheelbase Size | 2750 mm | 2750 mm |
