An inspection should start with a clear question. That might concern a mechanical or electrical failure, the condition of a vehicle, previous repair work, a warranty issue or a disagreement about what caused the problem.
The work then needs to follow the evidence. It should not begin with a preferred answer or promise a conclusion before the vehicle, records and circumstances have been reviewed.
Agree the question and preserve the evidence
The instruction should explain what needs to be established, who will use the report and what access is available. Photographs, diagnostic information, removed parts and relevant records should be identified and kept where possible.
- Clear scope and intended use
- Vehicle identity, mileage and condition
- Fault reports and diagnostic evidence
- Maintenance and repair history
- Photographs and retained components
- Known limitations on access or evidence
Build a clear sequence of events
The inspection is only one part of the picture. Job cards, invoices, diagnostic reports, communications and discussions with the people involved help establish what happened before and after the failure.
- Reported symptoms and dates
- Previous diagnosis and repair decisions
- What each person observed
- Changes between repair visits
- Evidence supporting or challenging each account
- Gaps that still need to be checked
Report the position without overstating it
The report should separate confirmed facts, observations, information supplied by others and professional opinion. It should explain the likely cause where the evidence supports one, identify contributing factors and be honest where a firm conclusion cannot be reached.
- Clear findings in plain language
- Evidence behind each important conclusion
- Practical repair or prevention actions
- Any further tests or specialist input required
- Limits of the inspection and report