1951 Alvis TB 21 vs. 2007 Porsche Cayenne
To start off, 2007 Porsche Cayenne is newer by 56 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 3,189 cc, 2007 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2007 Porsche Cayenne (247 HP @ 6000 RPM) has 156 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2007 Porsche Cayenne should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2007 Porsche Cayenne (310 Nm) has 106 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2007 Porsche Cayenne 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 | 2007 Porsche Cayenne | |
| Make | Alvis | Porsche |
| Model | TB 21 | Cayenne |
| Year Released | 1951 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 3189 cc |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 247 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 204 Nm | 310 Nm |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 90 mm | 95.9 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4790 mm |
| Vehicle Width | 1680 mm | 1710 mm |
| Wheelbase Size | 2750 mm | 2860 mm |
