Owner Guides
The part nobody teaches you: how to read an estimate, which recommended services are worth doing, and how to say no without ending up stranded. Written from the side of the counter that takes the money, for the side that pays it.
- Catalytic Converter Theft: What Actually Stops It
- Do Catalytic Converter Cleaners Work? Two Cases of Six
- What Is a Catalytic Converter? Three Metals and a Honeycomb
- How Long Does an Alternator Last? 80,000 to 150,000 Miles
- Where Is the VIN Number on a Car? Two Places, Always
- Is a Transmission Flush Necessary? Needed, Upsell, or Risk
How these owner guides are written
A service counter decides most of what a car costs over its life. These guides cover how to read a repair estimate, which recommended services the manufacturer actually schedules, when a dealer earns its premium, and what a warranty does and doesn't cover.
Where this comes from
Ordinary trade practice on both sides of the counter: how a shop builds an estimate, what book time is, how suppliers grade parts and where the markup lands.
Where a consumer right is involved, the guide points at the rule rather than paraphrasing it.
What this isn't
Not an accusation that shops are dishonest. Most lines on an estimate are legitimate, and the ones that aren't usually survive because nobody asks.
The point is knowing which is which before you're standing there deciding.
The limits we state
Written-estimate requirements, the right to keep old parts and caps on shop supplies charges are set locally and vary widely by state and by country.
These guides describe what to look for, not what anybody owes you.
Found a figure here that doesn't match what you were quoted, or think something on this page is wrong? Tell us. Corrections get read first and the page gets dated when it changes. If you want to know how these guides are put together before you trust one, that's written down too.