| Autobahn | motorway freeway highway interstate highway |
| Autobahnmaut | freeway toll motorway toll |
| Autobahnring | beltway loop orbital motorway ringway |
| Autobahnkreuz | freeway junction highway junction interchange motorway junction |
| Autobahnbrücke | highway bridge motorway bridge |
| Autobahngebühr | toll |
| Autobus | bus coach motorbus |
| Autocar | bus |
| Autodafé | auto-da-fé |
| Autofahrt | car ride |
| Autofähre | car ferry |
| Autohaus | car dealer car dealership |
| Autokauf | car purchase |
| Automat | vending machine |
| Autonarr | piston head pistonhead |
| Autorin | author writer |
| Autosave | autosave |
| autogam | autogamous |
| autogen | autogenous |
| Blutbahn | circulatory system |