1High Likelihood
AdBlue / NOx sensor system faults
Engine light, AdBlue service message, mileage countdown before restart lockout, or an AdBlue level that does not behave normally.
How to check
Diagnose fault codes first.
Estimated Repair Cost
£900
Should I buy a 2018 Vauxhall Insignia 2.0 Diesel Manual?
Explore common problems, estimated repair costs and practical checks for the 2018 Vauxhall Insignia 2.0 Diesel Manual. Use this guide to help assess a used car, then unlock a personalised report for the exact vehicle you're considering.
Common problems
2Moderate Likelihood
Manual clutch and dual-mass flywheel wear
High biting point, slip in higher gears, vibration through the pedal, rattly idle, or shudder when pulling away.
How to check
Pull away gently, then accelerate hard in a higher gear from low revs once fully warm.
Estimated Repair Cost
£1,400
3Moderate Likelihood
Timing chain rattle and wear
A metallic rattle for a second or two on cold start, especially after the car has been standing overnight.
How to check
Start the engine from fully cold after it has been left for several hours.
Estimated Repair Cost
£1,500
MOT Failure Rate
Vauxhall Insignia buying questions
Is a 2018 Vauxhall Insignia worth buying?
It can be, but only if the individual car backs it up. For the 2018 Vauxhall Insignia 2.0 Diesel Manual, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.
What common problems affect the Vauxhall Insignia (2018)?
The problem cards above list the model-level checks for this guide. Read them as priorities for inspection and paperwork review, not proof that every example will have those faults.
What should I check before buying a Vauxhall Insignia?
Look for evidence, not just assurances: MOT advisories, service history, repair invoices, warning lights, fluid leaks, tyre and brake condition, and how the car behaves on a proper test drive. And of course, look at your personalised Should I Buy This Car? report, outlining a full list of common issues in detail, a personalised road test, a plain-English explanation and a MotorIQ score.
A model guide is useful. A report on its registration is better.
The guide above gives you the model-level pattern. A personalised MotorIQ report checks the registration-specific record and turns it into an ownership view before you commit.
Or enter the vehicle manually