Engine Opel A20DTH

The 2.0-liter diesel engine Opel A20DTH or LBS was produced from 2008 to 2015 and was installed on a number of the most popular models of the concern, such as Astra, Insignia and Zafira. This unit is essentially a modification of the famous Italian diesel engine Fiat Multijet II.

The A family: A13DTE, A17DTJ, A17DTR, A20DTH, A22DM, A22DMH.

The engine was installed on:

  • Opel Astra J (P10) in 2009 – 2015;
  • Opel Cascada A (W13) in 2013 – 2015;
  • Opel Insignia A (G09) in 2008 – 2014;
  • Opel Zafira C (P12) in 2011 – 2014.


Production years 2008-2015
Displacement, cc 1956
Fuel system Common Rail
Power output, hp 160 – 170
Torque output, Nm 350
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 83
Piston stroke, mm 90.4
Compression ratio 16.5
Features intercooler
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging VGT
Recommended engine oil 5W-30
Engine oil capacity, liter 4.5
Fuel type diesel
Euro standards EURO 5
Fuel consumption, L/100 km (for Opel Insignia 2010)
— city
— highway
— combined
Engine lifespan, km ~250 000
Weight, kg 190

Disadvantages of the A20DTH engine

  • Power units until 2013 often wedged when driving at high speed;
  • The reason for the wedge is oil starvation of the main liners, but the culprits are different;
  • Also, owners are regularly worried about jamming of the intake manifold flaps;
  • Antifreeze often oozes from the intake channel, and this is quite dangerous for the engine;
  • Due to the drying of the sealing rings, a heat exchanger will usually leak by 50,000 km;
  • Engine speed is most often floating due to contamination of the fuel pressure regulator;
  • Typical problems with the particulate filter and the EGR valve are also present here.

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