pertaining to the design, operation, manufacture, or sale of automobiles: automotive parts.
2.
propelled by a self-contained motor, engine, or the like.
noun
3.
Informal.an industry, store department, etc., specializing in appliances and parts for cars, trucks, and other motorized vehicles: You may find what you're looking for in automotive.
1865, in ref. to some sort of helicopter-like device, from auto- "self," from Greek, + motive (adj.), from Latin. Meaning "pertaining to automobiles" is from 1898.