1952 Alvis TB 21 vs. 2009 Mercury Mariner
To start off, 2009 Mercury Mariner is newer by 57 year(s). Which means there will be less support and parts availability for 1952 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1952 Alvis TB 21 would be higher. At 2,992 cc (6 cylinders), 1952 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 2009 Mercury Mariner (153 HP @ 6000 RPM) has 62 more horse power than 1952 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2009 Mercury Mariner should accelerate faster than 1952 Alvis TB 21.
Let's talk about torque, 1952 Alvis TB 21 (204 Nm @ 2200 RPM) has 20 more torque (in Nm) than 2009 Mercury Mariner. (184 Nm @ 4500 RPM). This means 1952 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 2009 Mercury Mariner.
Compare all specifications:
| 1952 Alvis TB 21 | 2009 Mercury Mariner | |
| Make | Alvis | Mercury |
| Model | TB 21 | Mariner |
| Year Released | 1952 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 2992 cc | 2488 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 153 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 204 Nm | 184 Nm |
| Torque RPM | 2200 RPM | 4500 RPM |
| Fuel Type | Gasoline | Gasoline / Electric Hybrid |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4440 mm |
| Vehicle Width | 1680 mm | 1810 mm |
| Wheelbase Size | 2750 mm | 2630 mm |
