Age is one part of the history, not a dependable remaining-life measurement. Usage, water exposure, mounting condition, previous faults and the availability of supported parts all affect the practical assessment.
What the observation tells you
A lightly used older appliance can still have a serious leak, while a younger one may have a straightforward external fault. Avoid making a repair decision from a generic lifespan number without a diagnosis. Separate an unattractive casing from damage that affects safe operation.
A useful next step
Ask the engineer what condition has actually been found and what remains uncertain. Use that explanation alongside the repair scope and parts position to make an informed decision.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.