- Occupant protection
- Octane rating (petrol)
- OFF (air conditioner)
- OFF (deluxe automatic air conditioner)
- Oil
- On-board computer
- On-board Handbook
- ON/OFF button
- One-touch dialling (handset)
- Online information services
- Online services
- Opening
- Options
- Orientation (map)
- Outside temperature display
- Overview (controls and displays)