In Carena theme, there is a filter to filter vehicles based on given criteria in sidebar.
Once user select some criteria, there might be need to add a reset link to start fresh.
We added a new widget in Pix Auto deals plugin from version 1.5 onwards. ( If you have older vesrion of Pix Auto deals plugin, you can update easily, by following steps listed here https://solutions.bolvo.com/portal/kb/articles/how-to-update-pix-auto-plugin )
Adding this widget will add a Reset link on front end.