When is a second repair quote worth getting?

When a different number could change the route.

Look for decision sensitivity

If £400 less would turn REVIEW into FIX, another quote has a clear purpose.

Compare like for like

Parts, labour, warranty and scope all matter.

Use the right specialist

Cheapest is not automatically better evidence.

Recalculate, do not just collect quotes

New evidence should feed back into the decision.