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 3,598 cc (6 cylinders), 2007 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2007 Porsche Cayenne (287 HP @ 6200 RPM) has 196 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 (385 Nm) has 181 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 | 3598 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 287 HP |
| Engine RPM | 4000 RPM | 6200 RPM |
| Torque | 204 Nm | 385 Nm |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 90 mm | 96.4 mm |
| Engine Compression Ratio | 7.1:1 | 12.3:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4430 mm |
| Vehicle Width | 1680 mm | 1930 mm |
| Wheelbase Size | 2750 mm | 2860 mm |
