Written Car Repair Estimates: Your Rights and What to Check

Written Repair Estimates: What to Check

Updated November 6, 2026

Does a Mechanic Have to Give a Written Estimate?

It depends on your state: some require a written estimate or your approval before work over a set amount, and others do not. California is one state with firm rules. Either way, ask for one with parts and labor listed separately and write "call for approval before extra work" on the order.

Updated November 6, 2026 · Source: FTC auto repair advice and state consumer agencies; rules vary, so check your state attorney general. Not legal advice.

What a Good Estimate Shows

Your vehicle, mileage and the problem you described.
Each repair, with parts and labor listed separately.
Part type: new OEM, aftermarket or rebuilt.
Fees, tax and the total.
The date and the shop's name and address.

Approving Extra Work

Shops often find more once the car is apart. That is normal, but you should decide. Ask for a call or text, a photo, the new total, and a note in writing.

If the Bill Is Higher Than Agreed

Compare the invoice with the estimate, line by line.
Ask the manager to explain the difference calmly, and keep notes.
Be aware that in many states a shop can keep a car until a lawful bill is paid (a mechanic's lien), so get advice before walking away.
Complain to your state attorney general or consumer office, and dispute card charges with your card issuer where appropriate.

Use the repair checklist at drop-off. Common repair scams are worth a read too.

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