I bought a used car that appeared great & drove well during the test drive.The day after the purchase, the engine light turns on, turns out I have thousands of dollars worth of repairs. The dealership will not give me my money back. I have proof that they knew that they were selling me a bad car. Certified mechanics stated that they turned of something in the car to prevent the "check engine light" from showing up while I test drove it. The light came on after driving more that 50 miles, which is normal for it to come back. I cannot afford the repair works! I declined the "Cancellation Option" only because they said it was only valid for 24hrs and worth $400.00! They used this to get me stuck with the car. It is actually $75.00 for the Cancellation Option for a car under $5k I paid $4k.