Opel Astra H — Reliability

H 2005–2010 1 engine

Reliability Summary

Engine Z18XER — 75/100 ACCEPTABLE
Known Issues 7

Engine in this model

ACCEPTABLE 75

Z18XER

1.8 Ecotec (Z18XER)

Astra H, Vectra C and Zafira B 1.8 with variable cam timing on both camshafts. Timing belt, not chai...

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Known Issues Across All Engines

Issue Engine Severity Onset
Timing belt replacement (interference engine) Z18XER high —
Oil cooler seal leak - oil and coolant mix Z18XER moderate 80,000 km
Thermostat failure - overheating Z18XER moderate 50,000 km
Engine electronics / ECU faults Z18XER moderate —
Cam phaser solenoid sticking - check engine light Z18XER moderate —
Crankcase ventilation (PCV) diaphragm rupture Z18XER minor 80,000 km
Ignition module failure - misfire Z18XER minor 70,000 km