1953 Alfa Romeo AR 51 vs. 1952 Alvis TB 21
To start off, 1953 Alfa Romeo AR 51 is newer by 1 year(s). Which means there will be less support and parts availability for 1952 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1952 Alvis TB 21 would be higher. At 2,992 cc (6 cylinders), 1952 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 1952 Alvis TB 21 (91 HP @ 4000 RPM) has 28 more horse power than 1953 Alfa Romeo AR 51. (63 HP @ 4400 RPM) In normal driving conditions, 1952 Alvis TB 21 should accelerate faster than 1953 Alfa Romeo AR 51.
Compare all specifications:
| 1953 Alfa Romeo AR 51 | 1952 Alvis TB 21 | |
| Make | Alfa Romeo | Alvis |
| Model | AR 51 | TB 21 |
| Year Released | 1953 | 1952 |
| Engine Position | Front | Front |
| Engine Size | 1884 cc | 2992 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 63 HP | 91 HP |
| Engine RPM | 4400 RPM | 4000 RPM |
| Engine Bore Size | 82.6 mm | 84 mm |
| Engine Stroke Size | 88 mm | 90 mm |
| Engine Compression Ratio | 7.0:1 | 7.1:1 |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Length | 3530 mm | 4430 mm |
| Vehicle Width | 1580 mm | 1680 mm |
| Wheelbase Size | 2210 mm | 2750 mm |
