1951 Alvis TB 21 vs. 2004 Jaguar XK
To start off, 2004 Jaguar XK 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 4,196 cc (8 cylinders), 2004 Jaguar XK is equipped with a bigger engine. In terms of performance, 2004 Jaguar XK (390 HP @ 6100 RPM) has 299 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2004 Jaguar XK should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2004 Jaguar XK (525 Nm) has 321 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2004 Jaguar XK 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 XK | |
| Make | Alvis | Jaguar |
| Model | TB 21 | XK |
| Year Released | 1951 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4196 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 390 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 204 Nm | 525 Nm |
| Engine Bore Size | 84 mm | 86 mm |
| Engine Stroke Size | 90 mm | 90 mm |
| Engine Compression Ratio | 7.1:1 | 9.1:1 |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4430 mm | 4770 mm |
| Vehicle Width | 1680 mm | 1800 mm |
| Wheelbase Size | 2750 mm | 2590 mm |
