1951 Alvis TB 21 vs. 1986 Mercury Grand Marquis
To start off, 1986 Mercury Grand Marquis is newer by 35 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 4,942 cc (8 cylinders), 1986 Mercury Grand Marquis is equipped with a bigger engine. In terms of performance, 1986 Mercury Grand Marquis (148 HP @ 3200 RPM) has 57 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1986 Mercury Grand Marquis should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1986 Mercury Grand Marquis (367 Nm) has 163 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 1986 Mercury Grand Marquis 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 | 1986 Mercury Grand Marquis | |
| Make | Alvis | Mercury |
| Model | TB 21 | Grand Marquis |
| Year Released | 1951 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4942 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 91 HP | 148 HP |
| Engine RPM | 4000 RPM | 3200 RPM |
| Torque | 204 Nm | 367 Nm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 5400 mm |
| Vehicle Width | 1680 mm | 1980 mm |
| Wheelbase Size | 2750 mm | 2920 mm |
