Occupant protection

Octane rating (petrol)

Odour (gas)

Oil

On-board computer (analogue instrument cluster)

On-board computer (Audi virtual cockpit)

On-board Handbook

ON / OFF button (MMI)

Online destinations

Online map update

Online media

Online services

Opening

Opening / closing

Operation

Options menu

Outside temperature display

Overrun fuel cut-off

Overview (controls and displays)