Engine Peugeot XUD11A

The 2.1-liter Peugeot XUD11A or P9A diesel engine was produced from 1990 to 1997 and was installed only on two models of the French concern: Peugeot 605 and Citroen XM. This unit is significantly less common relative to its turbocharged counterparts.

The XUD series includes: XUD7, XUD7TE, XUD9, XUD9SD, XUD9TE, XUD11A, XUD11ATE.

The engine was installed on:

  • Peugeot 605 I (Y30) in 1991 – 1993;
  • Citroen XM in 1990 – 1997.


Production years 1990-1997
Displacement, cc 2138
Fuel system prechambers
Power output, hp 82
Torque output, Nm 145
Cylinder block cast iron R4
Block head aluminum 12v
Cylinder bore, mm 86
Piston stroke, mm 92
Compression ratio 22.5
Features no
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-40
Engine oil capacity, liter 5.5
Fuel type diesel
Euro standards EURO 1
Fuel consumption, L/100 km (for Peugeot 605 1995)
— city
— highway
— combined
Engine lifespan, km ~500 000
Weight, kg 160

Disadvantages of the XUD11A engine

  • This very reliable and almost omnivorous diesel engine has a resource of under 500,000 km;
  • The low location of the expansion tank brings owners a lot of problems;
  • At the slightest drop in the level of antifreeze, the motor overheats and breaks through the gasket;
  • Change the fuel filter more often, as the Lucas injection pump is difficult to repair;
  • This filter must be replaced carefully, it is very easy to break its glass;
  • Hydraulic lifters do not tolerate cheap oil and can knock up to 100,000 km;
  • The network describes cases of loss of fore-chambers on runs of more than 300 – 400 thousand km.

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