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6 faults documented by at least two sources, listed by version then by mileage at onset when known.
6 known faults
Owners of the 1.5 Turbo describe injection problems: injectors considered erratic, an engine that judders even after several injectors were replaced, and jerks. The samples are small (a few testimonies).
Owners of the 1.5 Turbo describe injection problems: injectors considered erratic, an engine that judders even after several injectors were replaced, and jerks. The samples are small (a few testimonies).
On the 1.6 CDTI, the original hydraulic tensioner is described as a design fault: oil can drain out when the engine is switched off. Car Reliability Report advises against buying a 1.6 CDTI without an invoice for a recent chain replacement. Fiches-auto also notes a noisy chain in testimonies.
Car Checker cites the AdBlue system as the number one recurring fault of the Insignia B 2.0 CDTI; Fiches-auto testimonies also mention AdBlue problems on the 1.6 diesel.
A recall concerns Insignia B built from June 2016 to November 2018: the fuel hose can be damaged by contact with a bracket, which can cause a leak and a fire risk. According to Au7o, the 2.0 diesel engine is affected; the repair is free of charge. Check with an Opel dealer, using the serial number, that the recall has been carried out.
Fixed free of charge by a dealer and not counted in the reliability score: ask for proof the work was done (invoice, or a VIN check at a dealer).
Owners of the 2.0 diesel 170 hp report a noisy chain or tensioner, with rattles when cold or at idle beyond roughly 120,000 km. Testimonies on Fiches-auto describe a break in the chain linking the camshafts, causing engine failure (one case at 145,000 km). These are testimonies, not statistics.
On the 2.0 CDTI, soot from short journeys and low temperatures clogs the EGR valve; Autodoc advises replacing it at around 100,000 to 120,000 km or when fault codes appear. Car Reliability Report rates this problem as medium severity between 70,000 and 120,000 km.
Car Checker cites the AdBlue system as the number one recurring fault of the Insignia B 2.0 CDTI; Fiches-auto testimonies also mention AdBlue problems on the 1.6 diesel.
An OBD scanner plugged in under the steering wheel shows stored fault codes, even with warning lights off: useful during the test drive.
Compare prices of parts for the Opel Insignia B (timing, brakes, filters) to estimate the repairs to plan for.