HOW TO SELL CAR!!!

I'm currently living in NCR and own a Duster 85ps RXZ 4x2 mt diesel model. The condition of the car is excellent, and it has run around 72000 km. Due to the 10-year restriction on diseal vehicles, we were considering selling the car. How can I sell my car in the best way, and please tell me what you think should be the price of the car.

And plz do give me some suggestions and experiences. and also clarify that exchanging your car at dealership as we are also considering buying a car mainly grand vitara, slavia or virtus so do tell me is it worth it to exchange through dealership?