- A/C (automatic air conditioner)
- A/C (manual air conditioner)
- ABS
- Acceleration figures
- Accelerator pedal
- Accessories 1, 2
- Activating online traffic data licence
- Active lane assist
- Adapter cable for Audi music interface
- Adaptive light
- Additional information (radio)
- Advanced key
- Airbag
- Air conditioner (automatic)
- Air conditioner (manual)
- Air recirculation mode
- Alarm system
- Alterations to the vehicle
- Alternative frequency
- Alternative route
- Alternator (warning lamp)
- Announcements (traffic programme) 1, 2
- Anti-dazzle exterior mirrors
- Anti-dazzle interior mirror
- Anti-freeze
- Anti-lock brake system
- Anti-theft alarm system
- Anti-theft wheel bolts
- Armrest
- Ashtray
- ASR
- Assigning function to button (multi-function steering wheel)
- Audi connect
- Audi connect services
- Audi music interface
- Audio file
- Audio player
- Audio track (DVD)
- AUTO
- Auto Lock (central locking system)
- Automatic gearbox
- Auxiliaries (efficiency programme)
- AV
- Average fuel consumption
- Average speed
- Axle loads