| Autosave | autosave |
| Autobahn | motorway freeway highway interstate highway |
| Autocar | bus |
| Autodafé | auto-da-fé |
| Autofähre | car ferry |
| Autogamie | autogamy |
| Autohaus | car dealer car dealership |
| Autokauf | car purchase |
| Autoklav | autoclave |
| Autolyse | autolysis |
| Automarke | car brand make of car |
| Automat | vending machine |
| Autonarr | piston head pistonhead |
| Autopsie | autopsy |
| Autositz | car seat |
| Autosom | autosome |
| autogam | autogamous |
| Autistin | autist |
| Autograph | autograph |
| auto- | self- auto- |