Engine Jaguar AJ20

The Jaguar AJ20 2.1-liter gasoline engine was produced by the company from 2001 to 2008 and was installed in the most compact X-Type model, but was offered only in certain markets. This is the only power unit in the series that has no analogues in the Duratec V6 family.

AJ-V6 series: AJ20, AJ25, AJ30.


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
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

  • This is a fairly reliable, but very rare engine and parts for it are expensive;
  • The main problems are caused by air leaks due to drying gaskets;
  • Even in the intake, the electrically driven geometry adjustment system often fails;
  • It is necessary to clean the crankcase ventilation valve regularly or the grease will press from all the slots;
  • After 200 thousand km, oil consumption is often found here due to the occurrence of rings.

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