- A/C (air conditioner)
- ABS
- Acceleration figures 1, 2
- Accelerator pedal
- Accessories 1, 2
- Accessories (trailer)
- Active lane assist
- Adapter cable for Audi music interface
- Adaptive cruise control
- Adaptive light
- AdBlue
- Additional information (radio)
- Advanced key
- Airbag 1, 2
- Air conditioner
- Air distribution, adjusting
- Air recirculation mode (air conditioner)
- Alarm system
- Alterations to the Audi A4
- 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
- Ashtrays
- ASR
- Audi braking guard
- Audi connect
- Audi connect services
- Audi drive select
- Audi lane assist
- Audi music interface
- Audio file
- Audio players
- Audio track (DVD)
- AUTO
- Auto-check control
- Auto Lock (central locking system)
- Automatic gearbox
- Automatic headlights 1, 2
- Automatic keypad lock (handset)
- AUX-IN connection 1, 2
- Auxiliaries (efficiency programme)
- Auxiliary heating/ventilation
- AV
- Average fuel consumption
- Average speed
- Axle loads 1, 2
Instruction book Audi A4 Version Year 2014