The question most used-car buyers forget to ask first

Today's Tip: The Used Car Model Report

Most people walk onto a used-car lot already losing. Not because of the salesman… because of what they do not know about the specific car they are about to look at.

Let me explain…

A friend of mine, Nadia, has been thinking about replacing her car. She is 64, works three mornings a week at a veterinary office in Grand Rapids, and started picking up her two grandkids from school on Tuesdays and Thursdays. Her current car is thirteen years old and the shop told her the next big repair was going to cost more than the car is worth.

She found a used Honda CR-V online. 2019, reasonable miles, decent price. She was ready to drive out and look at it Saturday morning.

I asked her one question. "Do you know what breaks on that specific year of CR-V?"

She did not. Neither does anyone, unless they go look.

And here is the thing most people never figure out… the exact year matters more than the model name. A 2019 CR-V and a 2017 CR-V have different problems. The 2017 had a well-documented fuel-dilution issue in the engine oil that Honda fought owners on for years. The 2019 had updated software that mostly solved it.

A general article called "best used SUVs" will not tell you that. A dealer will not tell you that. The listing will certainly not tell you that.

But Grok will. Because Grok reads the web live — owner forums, X complaints, mechanic videos, recent recall notices. The exact year, the exact model, the exact engine, right now.

Here is the prompt that pulls it all together into one report you can read in your driveway before you ever go look at the car.

Nadia ran this on Friday night. The report took about forty seconds. The 2019 CR-V's biggest known complaint was the infotainment screen freezing — annoying, but a dealer software update usually fixes it. The second was tire wear from a factory alignment issue that was fixed under warranty on most cars by 2021. The third was a battery-drain problem on cars that sat for long periods.

Nadia drove out Saturday with her five questions written on an index card. She asked whether the infotainment update had been installed. She asked whether the alignment service had been documented. She asked for the service records.

The seller had all three answers ready… good sign.

She also knew the current fair price in Michigan was about two thousand lower than the listing. She mentioned that politely, with the Kelley Blue Book range Grok had shown her. The seller came down fifteen hundred.

Now, I know what you are thinking. "I am not a mechanic. Even if the AI tells me the problems, how do I know what to do with that information?"

That is the point of the five questions in the prompt. You do not need to be a mechanic… you need to know what to ask, and you need to watch how the seller answers. A seller who flinches at a specific, informed question is telling you something. A seller who already has the service records out and matches your questions one by one is telling you something very different.

Try it the next time anyone in your family is thinking about a used car. Ten minutes before you leave the house. It changes how the whole conversation goes.

The seller will notice.

★ Quick Wins

Skill Builder: Teaching AI Your Preferences

Every AI tool, when you first open it, treats you like a stranger. It does not know where you live. It does not know your reading level. It does not know whether you prefer short answers or long ones, bullet points or paragraphs, formal or casual.

So you end up explaining yourself every single time. "I live in Michigan… I am sixty-four… please keep it short… please skip the technical words." The same five lines, every conversation. It is like meeting a new assistant every morning.

There is a better way. Most modern AI tools let you give them a one-time memo about yourself.

In Claude it is called a Project. In Gemini it is called Saved Info or Gems. In Grok it is Custom Instructions. The name does not matter… the idea is the same. You teach the tool once, and it remembers.

The trick is to write the memo so it covers the questions you are actually going to ask. A memo that just says "I am retired" will not help. A memo that says "I am sixty-four, I live in Grand Rapids Michigan, I prefer short answers in plain English without technical terms, assume I know less about technology than most people my age, and please always cite your sources" will change every answer you get after it.

Here is a starter memo you can adapt. Put it in whatever "custom instructions" or "about me" section your tool offers.

Set this up once, on a Sunday morning, and every conversation afterward starts further ahead. You stop re-explaining yourself. The AI stops guessing wrong about things you could have told it.

It takes guts to try something new. But five minutes with a memo is five minutes that saves you weeks of frustration later.