If car breaks down with in 1 week are you liable to get your money back from car lot?

It is a possibility. You would think a reputable car lot would want to make things right - BUT there are several considerations: what did your paperwork say about the condition of the car when you purchased it? Was the reason your car broke down caused by something that they claimed had been inspected and found to be OK? I am assuming this a used car or you would be under new car warranty. Used car lots work under what they call a "tail light warranty". That means when you drive it off the lot, they are no longer responsible. A lot of things can go wrong with a used car that are not predictable. But if you were intentionally mislead, you need to get a certified mechanic's diagnosis and take it back to the lot and see what you can get done. They may be willing to fix the problem, trade you out to another car or just turn their back on you. If you are prepared to do battle, gather some support. Check with the BBB to see if the lot has had complaints before, etc. Contact your local TV station consumer affairs person and see if they are willing to help you (with the power of the "press"). I hope you don't have to learn a lesson the hard way. But if you bought a clunker, you own a clunker. Next time look for lots that offer some kind of warranty or guarantee. Also, take the car to a diagnostic center or reputable mechanic and have the car gone over before you buy it. Hope you can work it out.