Most used car buyers rely on two things: their eyes and a history report. Sellers know this — and they know exactly how to beat both. In this video, I'll show you the $15 trick that exposes a wiped check-engine light in under 4 minutes, plus 7 more checks that cost nothing and reveal what sellers don't want you to find before you buy.

Whether you're buying from a private seller, a small lot, or a larger dealer — these checks apply. None of them require a mechanic. All of them together take under 30 minutes.

Which of these would have cost you the most to miss on your last used car purchase? Drop it in the comments

Don't Buy a Used Car Without Checking THIS...