This is the 5304th most frequent Polish word.
samochodowy
"Samochodowy" means "car-related" or "automotive" in English.
Here 'samochodowy' is used as an adjective to describe the store ('sklep'), indicating that the store specializes in car-related goods.
Sklep samochodowy oferuje szeroki wybór części do pojazdów.
The car store offers a wide selection of parts for vehicles.
In this sentence, 'samochodowy' qualifies 'zapach' (scent), indicating that the scent is specifically related to or designed for cars.
Zapach samochodowy unosi się w kabinie samochodu.
A car scent is lingering in the vehicle's cabin.
Here 'samochodowe' describes 'zderzenie' (collision), characterizing the collision as involving cars.