Separate diagnosis from repair
A diagnostic fee pays for testing and interpretation. The repair estimate explains the work recommended after the cause is identified.
Ask whether the diagnostic fee is waived, applied to the repair, or billed separately.
Read parts and warranty carefully
Parts may be original, aftermarket, rebuilt, used, or remanufactured. Each choice can change cost, availability, and warranty.
A good estimate should say what is included, what is not included, and what happens if hidden damage is found.
FAQ
What should be on a repair estimate?
Look for parts, labor, diagnostic fee, shop supplies, taxes, warranty, timeline, and authorization terms.
Can the final bill exceed the estimate?
It can if hidden damage or extra work is discovered, but the shop should explain and get approval before proceeding.
Should I ask for old parts back?
You can ask. Some warranty or core-return parts may need to go back to the supplier.