Vauxhall Insignia Faults
Common problems, known issues, and reliability guide.
Pre-Purchase Buyer's Guide
Expert VerdictThe Vauxhall Insignia is a hugely popular choice on the UK used market. While it has some well-documented common faults, regular servicing and preventative maintenance mitigate the worst of the issues. Its repairability score of 67/100 reflects the general availability of parts and ease of access for independent mechanics.
What to Look For
- Full service history (crucial for timing chains/belts)
- Smooth gear changes on automatic variants
- Evidence of water ingress in the boot or footwells
- Dashboard warning lights on cold startup
What to Avoid
- Ex-rental or heavily abused examples
- Cars with 'lifetime' gearbox oil that has never been changed
- Specific early-year diesel engines without DPF/EGR history
Variants
Own a Vauxhall Insignia?
Enter your email to get a critical alert if a severe new fault or recall is discovered for this specific car. No spam, ever.
Top Faults Across All Insignia Variants
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.
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.
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.
Injector Failure
SevereHigh-mileage Insignia CDTi examples develop injector wear, causing rough running and rising oil levels from diesel contamination.