Most shops are honest. This page is about spotting the ones that are not — and about the handful of pitches that even good shops fall into using.
How common is it, really
- Roughly half of car owners report a shop trying to sell them a repair they did not need.
- About a third report inflated charges for parts or labor.
- About one in seven report being charged for work that was never performed.
Those numbers are not a reason to distrust every mechanic. They are a reason to know what the pitches sound like, so you can tell an honest recommendation from a sales pitch — because they are said in exactly the same tone of voice.
The four defenses that cover almost everything
- Get it in writing before any work starts.
- Ask for the old parts back. Say it when you drop the car off, not when you pick it up.
- Ask “what happens if I don’t do this today?” A real safety problem has a real answer. An upsell usually does not.
- Get a second quote on anything over about $500.
The pitches this page will cover in full
- “While we had it up on the lift we noticed…” — the unrequested add-on
- Fluid flushes on a schedule the manufacturer never wrote
- The dirty-part show — a filthy filter or a jar of dark fluid that may not be from your car
- Parts billed but never installed, including the painted-over converter
- Counterfeit or downgraded parts billed at full price
- Bait-and-switch — the phone quote that grows once the car is apart
- The scare close: “I wouldn’t drive that off the lot”
- Unnecessary alignments, engine additives and “carbon cleaning”
- Storage fees and lien threats on work you never authorized
- Free inspections that exist to find problems
Each one gets the same treatment: the pitch you will hear, why it works, how to check it yourself, and what to say back.