Explore common problems, estimated repair costs and practical checks for the 2015–2024 Audi A4 B9. Use this guide to help assess a used car, then unlock a personalised report for the exact vehicle you're considering.
Petrol smell around the engine bay after a drive, dampness around fuel pipework, or in some cases few warning signs before a recall check reveals it.
After the drive, leave the engine idling briefly and stand by the front of the car with the bonnet open if the seller allows it.
£250
Coolant level slowly falls, pink residue appears around the engine bay, sweet coolant smell, or the heater turns weak when the system gets low.
Start from cold, let it reach normal temperature, then park up and let it idle for a minute.
£700
After rain, a door sounds heavy with water or releases an unusual gush when opened.
Open and close each door after the car has been standing outside or after washing.
£180
It can be, but only if the individual car backs it up. For the 2015–2024 Audi A4 B9, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.
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.
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.
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