Garage visit checklist
How to avoid overpaying: describe the symptom, agree the diagnosis cost, get an itemised written quote, require approval for extra work and check the result.

[ ] Describe the symptom rather than diagnosing
    \u201cKnocking over bumps on the right at low speed\u201d beats \u201creplace the struts\u201d. Diagnosis is the mechanic's job.
[ ] Note when and under what conditions it happens
    Speed, temperature, cornering, braking, cold or warm engine. A video or sound recording is ideal.
[ ] Bring the service history
    What was replaced and when. Otherwise it is easy to pay twice for something replaced six months ago.
[ ] Confirm the cost of diagnosis
    How much, how long, and whether it counts towards the repair if you have it done there.
[ ] Agree that nothing happens without approval
    In writing or in a message. It is the only protection against a bill that doubled while the car sat there.
[ ] Check the job sheet before leaving the car
    It should describe your problem rather than a generic phrase. Confirm the timescale and how they will contact you.
[ ] Record the mileage and condition
    Photos and video of the body, interior and dashboard. Disputed scratches after a repair are common and settled by images.
[ ] Remove valuables and personal items
    Documents, electronics, the child seat if needed. Liability for items left in the car is usually limited.
[ ] Get an itemised written quote
    Labour, parts and consumables separately. A verbal \u201croughly\u201d becomes a different figure at collection.
[ ] Ask what is critical now and what can wait
    And what happens if you do not. A good mechanic answers calmly and specifically rather than \u201cit is unsafe to drive\u201d.
[ ] Ask which parts will be fitted
    Original, aftermarket or used — different price and different life. It is your choice, made deliberately.
[ ] Ask to keep the replaced parts
    A normal request that has a disciplining effect. It also shows what was genuinely worn.
[ ] Take the documents and the warranty
    The completed work report, receipts, and the warranty on labour and parts with its period. Without paperwork there is no claim.
[ ] Test the result before you drive away
    The problem is gone, nothing new appeared, the levels are right. Coming straight back is easier than a week later.

Checklist from Unload: https://unloads.me/c/car-service-visit