What should I do if I think my car is a lemon?

Keep detailed records: every repair order, dates, mileage, days out of service and all communication with the dealer and manufacturer. Report the problem to the manufacturer in writing, since many state lemon laws require written notice and a final repair attempt. Then look up your state's lemon law on your attorney general's website to learn the deadlines and process, which may include arbitration. For guidance on your specific case, consider talking with a consumer protection attorney in your state.