What Questions Should I Ask a Mechanic
Ask what's being repaired versus replaced, what parts are being used, and who is guaranteeing the work, before any repair starts.
These questions keep the repair honest and the payout fair
- Repair or replace, and why Ask why each damaged part is being repaired instead of replaced, or the reverse. This decision changes both the cost and how the car performs afterward.
- OEM parts or aftermarket Ask which parts the shop plans to use and whether your insurer's policy covers the type you want. This affects safety, fit and resale value down the line.
- What the estimate doesn't show Ask if there's hidden damage they expect to find once they open the panel. Many repairs grow once work starts, and you want to know that's possible before you agree to anything.
- Who pays if it fails later Ask what the shop's warranty covers and for how long. This matters because insurer-direct-repair shops and independent shops can offer different guarantees.
- Will it look and drive right Ask how they'll check paint match, panel alignment and that nothing underneath was missed. A car can drive fine and still have a bad repair hiding under new paint.
What if the mechanic and the insurance adjuster disagree?
Side with your mechanic's written estimate and push the insurer to either match it or explain the difference in writing. The adjuster works from a formula built on average costs in your area, and your mechanic is looking at the actual car in front of them. Those two numbers don't always match, and the gap is where disputes start.
Ask the shop to put the disagreement in writing, listing the specific repair or part they believe the adjuster undervalued. Send that to your insurer and ask for a supplemental review, which is the normal process for resolving this kind of gap. Most insurers have a process for it because it's common, not because you're doing something unusual.
If the gap doesn't close, you can ask for a second shop's opinion or invoke your policy's appraisal process if it has one. Check your policy for that option, since not every policy includes it and the steps vary.
Once you know what to ask your mechanic, compare quotes to see which insurers make this process easiest going forward.
Asking these questions before repairs start versus after
If you do
You catch mismatches between the estimate and the actual damage before money changes hands. You know what parts are going in and what the warranty covers, so if something fails later you know exactly who's responsible and what it should take to fix it.
If you don't
You find out about part type, hidden damage or warranty terms only when a problem shows up later. By then the repair is done, the insurer has closed the file, and fixing a disagreement after the fact takes longer and costs you more effort than asking upfront would have.
Why the mechanic holds information the insurer doesn't
An insurance adjuster usually writes the first estimate from photos, a database of average repair costs, and sometimes a brief in-person look. The mechanic who actually opens up your car sees the real damage, including anything hidden behind a bumper or under a panel that wasn't visible before disassembly. That gap between the estimate and the actual repair is normal, and it's exactly why your questions matter before work begins rather than after.
The parts question matters because policies vary on what they'll cover. Some policies pay for original manufacturer parts as a matter of course, others default to aftermarket or used parts unless you push back, and the difference affects fit, safety systems and what the car is worth later. Check your policy's language on parts, since this is one of the clearest places where insurers differ from each other.
Warranty coverage varies for a similar reason. A shop in your insurer's preferred network may offer a warranty backed by the insurer itself, while an independent shop's warranty comes only from that shop. Neither is automatically better, but you want to know which you're getting and what happens if the shop closes or the insurer relationship ends.
Where this plays out differently is with older cars or cars with prior damage. A mechanic may find that a repair is possible but not worth doing compared to the car's value, which pushes the conversation toward a total loss instead. In that case, the questions shift from parts and warranties to how the payout is calculated, which is a separate decision from the repair itself.
The mechanic sees damage the adjuster's estimate doesn't, so your questions to them decide what gets paid for.
