There are many good options available in the budget of 15 lakh. Like Mahindra Scorpio, Toyota Innova Crysta, Mahindra XUV500..etc. Furthermore, choosing the best car completely depends on individual requirement and preferences. We would suggest you to check the available option on the following link and use the filters available as per you, to get the best pick narrowed down: click here
Exchange offers will be best shared by the dealership. Follow the link to see the dealership available: click here Moreover, exchange of a car would depend on certain factors like brand, model, physical condition, kilometers driven, number of owners and many more.
If you are looking for more power and safety with better features then Tata Hexa is a better to pick between these cars. However, if you are looking for a proper 8 seater car then Mahindra Marazzo can be the pick here. You may check the following link for more information: click here