I am not familiar with how the Verso that you rented achieved the new car
aroma, but in the U.S., one can purchase an automotive fragrance labeled
"New Car."  I know that GM dealers used to sell the stuff as an aerosol
spray, along with other scents like pine, baby powder, etc.  The new car
scent is probably also available as a liquid or solid that can be placed
near the intake.

BTW, avid hunters can purchase doe urine and mix it with the pine scented
freshener to re-live their experiences in the woods.