Someone whose occupation is repairing and maintaining automobiles(noun)
WordNet. Princeton University. 2010.
Use "auto-mechanic" in a sentence
"My Pop was an auto-mechanic, a blue collar guy, so you would think his reading selection would be limited to those five inch thick repair manuals that grease monkeys always kept handy for the latest technological change to a vehicle's specs."
"I know finance nerds, typography nerds, history nerds, auto-mechanic nerds."
"When Dan was small, his race-car-driver stepfather was killed in a crash, and his auto-mechanic mom sent him to live with his grandparents in Chicago."