Vauxhall Known Faults
UK
112
Known Faults
Models
Astra
1991–present
41 faults
Corsa
2000–present
62 faults
Insignia
2008–present
5 faults
Zafira
1999–2019
4 faults
Most Reported Faults
Turbocharger Failure
SevereTurbo failure on the Insignia 2.0 CDTi follows the standard pattern — oil sludge in the feed pipe starves the bearings, often on cars with extended oil change intervals.
Timing Chain Failure
CriticalThe A20DTH/DTJ 2.0 CDTi Insignia shares the timing chain weakness of the Astra J 1.6 CDTi. Chain rattle on cold start is the warning sign — ignore it at your peril.
EGR Cooler Failure
SevereEGR cooler failure on the Insignia 2.0 CDTi causes coolant to enter the intake manifold — a serious failure that requires immediate attention.
DPF Blockage
ModerateThe Insignia 2.0 CDTi is a fleet rep car often driven on short local trips rather than the motorway runs it is designed for. DPF blockage is endemic on urban-use examples.
Injector Failure
SevereHigh-mileage Insignia CDTi examples develop injector wear, causing rough running and rising oil levels from diesel contamination.