Car showing wrong mileage than actual, is it create the problem or how we solve the problem?

I bought used old car 2001 Honda accord from small dealer. At that time on car's meter is showing 149000 mileage, after I bought same time they did inspection, everything was fine. But one year later, I renewed my car's title, and I tried to inspection from auto shop. They told me your car showing wrong mileage than actual millage, I surprised. I knew the dealer where I bought, they told me false about car. Or they may changed car's meter or etc. What I have to do, I am worry, is it create problem to car inspection or pass? If I sell the car anybody, he can create problem for me, or talk the dealer where I bought. Or how I solve this problem?

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