1951 Alvis TB 21 vs. 2006 Mercury Mountaineer
To start off, 2006 Mercury Mountaineer is newer by 55 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 4,605 cc (8 cylinders), 2006 Mercury Mountaineer is equipped with a bigger engine. In terms of performance, 2006 Mercury Mountaineer (292 HP @ 5750 RPM) has 201 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2006 Mercury Mountaineer should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2006 Mercury Mountaineer (407 Nm) has 203 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2006 Mercury Mountaineer 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 | 2006 Mercury Mountaineer | |
| Make | Alvis | Mercury |
| Model | TB 21 | Mountaineer |
| Year Released | 1951 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4605 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 292 HP |
| Engine RPM | 4000 RPM | 5750 RPM |
| Torque | 204 Nm | 407 Nm |
| Engine Bore Size | 84 mm | 90.2 mm |
| Engine Stroke Size | 90 mm | 90 mm |
| Engine Compression Ratio | 7.1:1 | 10.1:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 7 seats |
| Vehicle Length | 4430 mm | 4920 mm |
| Vehicle Width | 1680 mm | 1870 mm |
| Wheelbase Size | 2750 mm | 2890 mm |
