1951 Alvis TB 21 vs. 1983 Bentley Mulsanne
To start off, 1983 Bentley Mulsanne is newer by 32 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 6,750 cc (8 cylinders), 1983 Bentley Mulsanne is equipped with a bigger engine. In terms of performance, 1983 Bentley Mulsanne (320 HP @ 4200 RPM) has 229 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1983 Bentley Mulsanne should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1983 Bentley Mulsanne (617 Nm) has 413 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 1983 Bentley Mulsanne 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 | 1983 Bentley Mulsanne | |
| Make | Alvis | Bentley |
| Model | TB 21 | Mulsanne |
| Year Released | 1951 | 1983 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 6750 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 320 HP |
| Engine RPM | 4000 RPM | 4200 RPM |
| Torque | 204 Nm | 617 Nm |
| Engine Bore Size | 84 mm | 104.1 mm |
| Engine Stroke Size | 90 mm | 99.1 mm |
| Engine Compression Ratio | 7.1:1 | 8.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 5290 mm |
| Vehicle Width | 1680 mm | 1940 mm |
| Wheelbase Size | 2750 mm | 3070 mm |
