1949 Alfa Romeo 6C vs. 1951 Alvis TB 21
To start off, 1951 Alvis TB 21 is newer by 2 year(s). Which means there will be less support and parts availability for 1949 Alfa Romeo 6C. In addition, the cost of maintenance, including insurance, on 1949 Alfa Romeo 6C would be higher. At 2,993 cc (6 cylinders), 1951 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 1949 Alfa Romeo 6C (104 HP @ 4800 RPM) has 13 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM). In normal driving conditions, 1949 Alfa Romeo 6C should accelerate faster than 1951 Alvis TB 21.
Compare all specifications:
| 1949 Alfa Romeo 6C | 1951 Alvis TB 21 | |
| Make | Alfa Romeo | Alvis |
| Model | 6C | TB 21 |
| Year Released | 1949 | 1951 |
| Engine Position | Front | Front |
| Engine Size | 2442 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 104 HP | 91 HP |
| Engine RPM | 4800 RPM | 4000 RPM |
| Engine Bore Size | 72 mm | 84 mm |
| Engine Stroke Size | 100 mm | 90 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Length | 4690 mm | 4430 mm |
| Vehicle Width | 1910 mm | 1680 mm |
| Wheelbase Size | 2710 mm | 2750 mm |
