Can you return a car if the salesman lie to me about the car?

Consult with an attorney about the consumer protection laws in your state.

I know Texas has the Deceptive Trade Practices Act which allows consumers to sue for material misrepresentations relied on in making the purchase. If you prevail, you're eligible to receive treble damages and attorneys fees, which makes it worthwhile to pursue. However, damages awarded depend on what the salesman lied about.