Buying a new car is great especially that new car smell. However, the more you drive your car the less potent that smells becomes. There are certain steps you do to recapture the new car smell once again. First, keeping your car's interior cleaned and vacuumed at least once a week. During this step remove all floor mats and trash. Vacuum the interior of your car and get rid of all loose dirt and debris build-up. This will allow your carpets to breath and keep your carpet fibers from being matted down.
During the next phase wipe down all interior vinyl, including your doors, cup holders and cloth or leather seats. I would suggest using a strong dilute-able interior cleaner. This will get rid of any oil from your hands and dirt from your feet. If you are a smoker, feel free to use a fabric cleaner and thoroughly wipe the headliner. Doing this will remove any smoke build-up that has risen to the top of the car.
The last step is the easiest. Go online and purchase a new car smell. Usually all you need is a couple of squirts under the driver and passenger seats. Bingo you are good to go and once again you can enjoy a nice ride with the new car smell.