Audi S4 Avant MOT Failures
An analysis of 705 real DVSA MOT tests on the Audi S4 Avant — what fails, how often, and how that compares to every other car on UK roads.
Where the Audi S4 Avant fails its MOT
The single biggest MOT failure point on the Audi S4 Avant is suspension joint dust cover severely deteriorated — this model is 6.7 times more likely to fail on this item than the average car on UK roads. That makes it worth watching for anyone buying or owning this model. Across 705 MOT tests, 11.27% of all Audi S4 Avant tests recorded this as a failure.
Suspension failures typically mean worn bushes, drop links, or dampers. These affect handling and tyre wear. Budget £150–£400 per corner at an independent garage for full suspension overhaul.
The failures span 2 categories: Suspension, Brakes. If you're inspecting a Audi S4 Avant before purchase, these are the areas to focus on — and if any have been flagged as advisories on a previous MOT, they're likely to become failures in the near future.
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What to check before buying a Audi S4 Avant
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Audi S4 Avant:
Suspension — check for suspension joint dust cover severely deteriorated. Brakes — check for brake hoses perished or damaged.
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. Enter any reg into our free car check to see the complete picture.
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Audi S4 Avant MOT FAQs
What are the most common MOT failures on a Audi S4 Avant?
Based on 705 DVSA MOT tests, the most common failure is suspension joint dust cover severely deteriorated — at 7x the national fleet average. Other frequent failures include brake hoses perished or damaged.
Is the Audi S4 Avant reliable based on MOT data?
The Audi S4 Avant has 2 categories where it fails more often than average. The main concern is suspension joint dust cover severely deteriorated. Always check a specific car's full history before buying.
What MOT failures should I expect at high mileage?
Above 100,000 miles, the Audi S4 Avant most commonly fails on suspension joint dust cover severely deteriorated and brake hoses perished or damaged. Under 60,000 miles, the main issues are .
How do I check a Audi S4 Avant's MOT history?
Enter the registration number into our free car check above. You'll see every MOT test result, advisories and failures, mileage readings, write-off status, and finance checks.
MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.