What Questions to Ask a Mechanic

A short list of the right questions tells you more about a shop than any review. Use these before authorizing any major repair.

5 minute conversationEasyHigh value

📋 Quick Facts

Questions
10
Time
5-10 min
Cost
Free
Saves
$100s-$1,000s

The ten questions below cover credentials, parts quality, warranty, estimate process, and authorization. A good shop answers them confidently. A shop that resists or deflects is telling you something.

⚠ The follow-up mattersA shop can answer all ten questions correctly and still scam you. Combine these answers with a written estimate, second opinion on big jobs, and asking for old parts back.

📝 Step-by-Step Guide

  1. Are your technicians ASE-certified?ASE Master Technician status (all eight tests passed) is the gold standard. Verify at ase.com.
  2. Can I see the written estimate before you start?Required by law in most states. A "yes, immediately" answer is the only acceptable one.
  3. What is your hourly labor rate?Standard is $75-$200 depending on region and shop type. Dealerships are higher.
  4. What kind of parts do you use, OEM or aftermarket?Either is fine if disclosed. Premium aftermarket (Bosch, Denso, ACDelco) is often functionally identical to OEM.
  5. What is your warranty on parts and labor?12 months / 12,000 miles is the AAA Approved Auto Repair minimum. Lifetime warranties on certain parts (brake pads, batteries) are common at chain shops.
  6. Will you return my old parts if I ask?A confident yes is the right answer. Some core charges apply (alternators, starters, calipers).
  7. What is your shop-supplies or misc fee?5-10 percent of labor is typical. Above 10 percent or uncapped is worth challenging.
  8. Can I authorize each additional item separately?Yes is the only right answer. Avoid blank "do whatever is needed" authorizations over $200.
  9. Are you AAA, RepairPal, or ASE Blue Seal certified?Any one of these is a meaningful third-party validation. AAA Approved Auto Repair maintains a vetted directory at aaa.com.
  10. Do you have liability and garage-keepers insurance?For both shops and mobile mechanics. Ask for proof. Without it, you have no recourse if your car is damaged in their care.
💡 Bonus questionAsk "What happens if the repair does not fix the problem?" A good shop will diagnose further at no additional charge under their warranty. A bad shop will hand you another bill.

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❓ Frequently Asked Questions

What is the single most important question?
Are your technicians ASE-certified, and can I see the written estimate before you start work? The combination of credentialed staff and a written estimate prevents most disputes.
Should I ask for references?
Online reviews (Google, Yelp, BBB) are better than personal references because they are harder to game. A shop with 500+ Google reviews and 4.5+ stars is well-vetted.
How do I verify ASE certification?
Ask for the technician's name and look them up at ase.com. ASE maintains a public credential verification tool.
What is a fair warranty period?
12 months / 12,000 miles on parts and labor is the floor (AAA Approved standard). Many chains offer 24/24 or lifetime on specific items.
Is it rude to ask all these questions?
No. A professional shop expects them and will answer confidently. If a shop bristles, that is your answer.
Where can I find more questions to ask?
The FTC Auto Repair Basics guide (consumer.ftc.gov) and AAA Approved Auto Repair (aaa.com) both publish question lists.
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