Will the government cut my medicare if I buy a car above $10,000?

[~KiLlEr~0_0]

My parents are getting me a used car soon for college. The car I want range from $9,000-$13,000. I don't want to get one that has high milleage. (100k+) The mileage I want are around $40-60k, but those cost $12,000-$13,000. My parents said they can't get me a car above $10,000 because the government would cut my medicare plan. My family is low income, so medicare is needed. Is this true? I am really frustrated. It's only $2-3k away. It is almost impossible to find a car I want that is below $10k with a low mileage. Btw, the car I'm looking for is a Scion xD.