1951 Alvis TB 21 vs. 2005 Aston Martin DB9
To start off, 2005 Aston Martin DB9 is newer by 54 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 5,935 cc (12 cylinders), 2005 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2005 Aston Martin DB9 (444 HP @ 6000 RPM) has 353 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2005 Aston Martin DB9 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2005 Aston Martin DB9 (571 Nm) has 367 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2005 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TB 21.
Compare all specifications:
| 1951 Alvis TB 21 | 2005 Aston Martin DB9 | |
| Make | Alvis | Aston Martin |
| Model | TB 21 | DB9 |
| Year Released | 1951 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 5935 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 444 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 204 Nm | 571 Nm |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 90 mm | 79.5 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4430 mm | 4710 mm |
| Vehicle Width | 1680 mm | 1880 mm |
| Wheelbase Size | 2750 mm | 2750 mm |
