1951 Alvis TB 21 vs. 2008 Jaguar XJ
To start off, 2008 Jaguar XJ is newer by 57 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 4,200 cc (8 cylinders), 2008 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2008 Jaguar XJ (300 HP @ 6000 RPM) has 209 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2008 Jaguar XJ should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2008 Jaguar XJ (420 Nm) has 216 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2008 Jaguar XJ 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 | 2008 Jaguar XJ | |
| Make | Alvis | Jaguar |
| Model | TB 21 | XJ |
| Year Released | 1951 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4200 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 300 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 204 Nm | 420 Nm |
| Engine Compression Ratio | 7.1:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 5100 mm |
| Vehicle Width | 1680 mm | 2110 mm |
| Wheelbase Size | 2750 mm | 3040 mm |
