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Engine code

Z17DTH engine faults.

Listed as: 1.7 CDTI, 1.7 CDTI ECOTEC. The faults belong to this engine code. They do not apply to every car with that name.

diesel

fuel

1686 cc

displacement

74 kW (101 HP)

power

1 fault write-ups. Important.

Before you buy

Known faults

1 important faults

Astra H: M32 six speed manual, bearing and synchro wear

expensive

In the Astra H diesel range, on the Z17DTH engine, two manual gearboxes were available: the five speed F23 and the six speed M32.

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The known weakness of the M32 is wear of the bearings and the synchro rings: a whine while driving, a stiff shift, especially 3rd to 4th. Replacement or a rebuild is expensive.

between 100,000 and 200,000 km

What to check

  • Count the gears: 6 raises the M32 suspicion on this engine group; 5 means more likely the F23
  • When warm, at 80 to 100 km/h, listen for gearbox whine: a noise that rises with the revs is suspect
  • Try the 3 to 4 and 4 to 5 shifts cold and warm: binding, scratchiness
1 more steps in the write-up

Engine code

Factory data

Factory data

Engine family
—
Fuel
diesel
Displacement
1686 cc
Power
74 kW (101 HP)
Production
—

Generations

Which models it is fitted to

4 generations.

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms