| Autocar | bus |
| Autocue | autocue |
| Automat | vending machine |
| Autonarr | piston head pistonhead |
| Autor | author literator |
| autogam | autogamous |
| auto- | self- auto- |
| Auto | car motor car auto order resolution writ |
| Autobahn | motorway freeway highway interstate highway |
| Autobus | bus coach motorbus |
| Autochrom | autochrome |
| Autodafé | auto-da-fé |
| Autofahrt | car ride |
| Autofähre | car ferry |
| Autogiro | autogyro autogiro |
| Autograf | autograph |
| Autohaus | car dealer car dealership |
| Autokauf | car purchase |
| Autoklav | autoclave |
| Autokrat | autocrat |