2008 Alfa Romeo 147 vs. 1951 Alvis TB 21
To start off, 2008 Alfa Romeo 147 is newer by 57 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, 2008 Alfa Romeo 147 (138 HP @ 6200 RPM) has 47 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM). In normal driving conditions, 2008 Alfa Romeo 147 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 58 more torque (in Nm) than 2008 Alfa Romeo 147. (146 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 2008 Alfa Romeo 147.
Compare all specifications:
| 2008 Alfa Romeo 147 | 1951 Alvis TB 21 | |
| Make | Alfa Romeo | Alvis |
| Model | 147 | TB 21 |
| Year Released | 2008 | 1951 |
| Engine Position | Front | Front |
| Engine Size | 1597 cc | 2993 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 138 HP | 91 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 146 Nm | 204 Nm |
| Engine Bore Size | 82 mm | 84 mm |
| Engine Stroke Size | 75.7 mm | 90 mm |
| Engine Compression Ratio | 10.0:1 | 7.1:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4230 mm | 4430 mm |
| Vehicle Width | 1740 mm | 1680 mm |
| Wheelbase Size | 2550 mm | 2750 mm |
