New cars smell new because they're new. It's not a fragrance, it's the smell of the fabric, carpet and adhesives.
Go to a carpet store or find someone getting new rugs installed, and get some rug scraps and put them under the seats and anywhere out of sight. That's close to new car smell.
Thats the smell of cancer- sorry. Highly toxic poly chemicals- glues, paints, plastics, electronics, solder, foam off gasing. Try opening a window somewhere in the country.
you can buy that smell as well as many others at most car auto parts stores,
buy a the new car smell freshener
Complete new interior, other than that you will not get it.
I'm trying to make my car like new, but I can't return the smell any ideas