KNOWN FAULTS · Opel

Opel Mokka / Mokka X 1.6 / 1.7 CDTI common problems.

2012–2019 · Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Opel CDTI EGR cooler and timing beltEGR / timing

Engine / equipment: Opel 1.6 CDTI (B16DTH), 1.7 CDTI (A17DTR) and 2.0 CDTI (A20DTH) diesels: Astra, Insignia, Meriva, Mokka, Zafira, Corsa and Cascada
Period mentioned: 2006–2019
Symptoms: Coolant loss with no visible leak or white smoke (cracked EGR cooler); power loss and rough idle (clogged EGR); on the 2.0 CDTI, water pump noise before the belt breaks.
Possible cause described: On the 2.0 CDTI the EGR cooler cracks internally (common between 100,000 and 180,000 km) and the timing belt, on an interference engine, breaks early, often because the water pump seizes. On the 1.7 CDTI the EGR fills with carbon between 80,000 and 150,000 km. On the 1.6 CDTI the EGR cooler also leaks internally.
Check for the garage: Watch the coolant level, check whether the 2.0 CDTI belt and water pump were replaced together and inspect the EGR.
Cost cited in the source: 2.0 CDTI EGR cooler: approx. €550–1,650; belt kit with pump: €450–750 at a German garage; 1.7 CDTI EGR: €370–1,100 (converted from dollars)A rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: 80,000–180,000 km. This is not a maintenance interval and does not predict a failure.

Applies if: Only the 4x4 versions.

Faulty 4x4, heavy steering and a flat battery caused by the Mokka's rear differentialTransmission

Engine / equipment: Opel Mokka / Mokka X with all-wheel drive (4x4)
Period mentioned: 2012–2019
Symptoms: Together or separately: a 4x4 fault warning, loss of power steering assistance at times and a battery that drains while the car is parked.
Possible cause described: According to L'argus, the three symptoms have a single cause: a failure of the rear differential (the all-wheel-drive coupling). In France, Opel covered it as a technical defect for up to 5 years or 80,000 km.
Check for the garage: Note whether the 4x4 warning and the heavy steering appear together. With heavy steering, do not drive on. At the garage, have them check the rear differential and its module before replacing the steering or the battery.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.