| Autoabgas | car exhaust |
| Autoatlas | road atlas |
| Autobus | bus coach motorbus |
| autogam | autogamous |
| Butangas | butane butane gas |
| Autobahn | motorway freeway highway interstate highway |
| Autocar | bus |
| Autocross | autocross |
| Autofokus | autofocus |
| Autograf | autograph |
| Autohaus | car dealer car dealership |
| Autoklav | autoclave |
| Autokrat | autocrat |
| Automat | vending machine |
| Automixis | automixis |
| Autorität | authority |
| Kautabak | chewing tobacco |
| autogen | autogenous |
| autoritär | authoritarian |
| Abgas | emission exhaust exhaust gas |