We help 2011 MERCEDES-BENZ CITO (O 520) owners find the standard OEM replacement light bulbs and LED, HID, or even halogen aftermarket upgrades for every trim. There are many replacement bulb options to fit practically every CITO (O 520) vehicle since it first rolled off the assembly line. Many 2011 MERCEDES-BENZ CITO (O 520) owners choose to upgrade stock headlights to a brighter, healthier, and more reliable LED set of lights. Nowadays, new LED projector sets are trendy.