1951 Alvis TB 21 vs. 2004 Jaguar XJ
To start off, 2004 Jaguar XJ is newer by 53 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 2,993 cc (6 cylinders), 1951 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 2004 Jaguar XJ (240 HP @ 6800 RPM) has 149 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2004 Jaguar XJ should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2004 Jaguar XJ (279 Nm) has 75 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2004 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 | 2004 Jaguar XJ | |
| Make | Alvis | Jaguar |
| Model | TB 21 | XJ |
| Year Released | 1951 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2968 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 240 HP |
| Engine RPM | 4000 RPM | 6800 RPM |
| Torque | 204 Nm | 279 Nm |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 90 mm | 79.5 mm |
| 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 | 1870 mm |
| Wheelbase Size | 2750 mm | 3040 mm |
