MOT advisory “Component mounting prescribed areas repair covered in underseal” — meaning and what to do
What the tester saw
MOT testers work from the DVSA inspection manual. For this item the manual wording is “The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired”. In plain English: there is wear or deterioration on the component mounting prescribed areas that is currently within legal limits (defect category: Major). The tester is flagging it so you can plan the repair before it becomes a fail — or a roadside problem.
Do you need to fix it?
Not to stay legal today — an advisory does not affect the pass. But advisories are the tester telling you what will likely fail next time. Two sensible rules:
- Safety-critical systems first. Suspension advisories sit squarely in this group — book an inspection within the next month or two rather than waiting for the next MOT.
- Buying a used car? Repeated advisories for the same item across several years of MOT history mean the owner has been ignoring it. Check the car’s full record with our free MOT history check.
Typical repair cost
A drop link or bush is £40–£120 fitted; a coil spring £120–£220; a shock absorber £150–£300 per side. Suspension is the UK’s most-failed system, so don’t sit on these.
Rule out related electronic faults yourself — a scan takes two minutes and saves a diagnostic fee.
- Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
- XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
- Autel UK testersAutel professional-grade diagnostic testers
Related suspension advisories
FAQs
Will “repair covered in underseal” fail my next MOT?
Not automatically — it fails only when the wear crosses the legal threshold in the inspection manual. But this advisory is the most common precursor: if left unattended, expect it to become a Minor or Major defect at a future test.
Can I ask the garage to remove an advisory?
No. Advisories are part of the official test record held by DVSA and appear in the vehicle’s public MOT history. Fixing the item means it simply won’t be advised next time.
Does an advisory affect the car’s value?
Slightly, yes — buyers who check MOT history (which is free) will price in the pending repair. Fixing cheap advisories before selling usually pays for itself.
Frequency: DVSA anonymised MOT data, 2025 (Class 4). Wording follows the DVSA inspection manual. Contains public sector information licensed under OGL v3.0.