2000 Mercedes-Benz mercedes benz a190

I have bought a new car in the car dealership therefore selling this is not a guarantee or warranty no return so since I have many requests . He drove me from a to b and still drives only to bridge until I had my new vehicle. Sureties have to be exchanged what he still has I do not know and requests for 500 euros I say no. If you want to have it, please report to pick it up at a reasonable price. Thank you