The most compact X-Type model was equipped with the Jaguar AJ20 2.1-liter gasoline engine, which was manufactured by the company between 2001 and 2008 but was only available in specific markets. The only power unit in the series without a Duratec V6 family equivalent is this one.
AJ-V6 series: AJ20, AJ25, AJ30.
Specifications
| Production years | 2001-2008 |
| Displacement, cc | 2099 |
| Fuel system | distributed injection |
| Power output, hp | 156 |
| Torque output, Nm | 196 – 201 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 81.65 |
| Piston stroke, mm | 66.84 |
| Compression ratio | 10.75 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | on the intake shaft |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.9 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Jaguar X-Type 2004) — city — highway — combined |
14.3 7.4 10.1 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 170 |
The engine was installed on:
- Jaguar X-Type 1 (X400) in 2001 – 2008.
Disadvantages of the Jaguar AJ20 engine
Although this engine is quite uncommon and its parts are costly, it is reasonably dependable;
Air leaks from drying gaskets are the primary cause of the issues;
The electrically driven geometry adjustment system frequently malfunctions, even in the intake;
Grease will push out of all the slots if the crankcase ventilation valve is not cleaned on a regular basis;
Due to the presence of rings, oil consumption is frequently observed here after 200 thousand kilometers.