If the lady that sold you the car that you paid $1,800 for knew that there were problems with it and did not disclose the problems to you before you bought it, then you have a factual basis for bringing a legal action against her to cancel the contract (rescission) or for the costs of repairs.In your situation, I would seek to cancel the contract and get my money back. The problem that you will have is proving that the seller knew before the sale that there were problems with the vehicle not disclosed to you before the purchase.