1951 Alvis TB 21 vs. 1952 BMW 501
To start off, 1952 BMW 501 is newer by 1 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 19 more horse power than 1952 BMW 501. (72 HP @ 4400 RPM). In normal driving conditions, 1951 Alvis TB 21 should accelerate faster than 1952 BMW 501.
Compare all specifications:
| 1951 Alvis TB 21 | 1952 BMW 501 | |
| Make | Alvis | BMW |
| Model | TB 21 | 501 |
| Year Released | 1951 | 1952 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1971 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 72 HP |
| Engine RPM | 4000 RPM | 4400 RPM |
| Engine Bore Size | 84 mm | 66 mm |
| Engine Stroke Size | 90 mm | 96 mm |
| Engine Compression Ratio | 7.1:1 | 6.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4810 mm |
| Vehicle Width | 1680 mm | 1810 mm |
| Wheelbase Size | 2750 mm | 2840 mm |
