This page helps you verify bulb sizes for the 2015 Honda Fit by lighting position, so you can match the right bulb to the right socket before you buy. Because the Fit can vary by trim, market, and body style, checking each lamp location is the safest way to avoid ordering the wrong replacement.
For the 2015 Honda Fit, the listed bulb chart covers exterior and interior lights such as the headlights, daytime running lights, turn signals, brake lights, tail lights, reverse lights, license plate lights, dome and map lights, and the trunk or cargo area light. Some positions use LED assemblies, while others use replaceable bulbs, so it helps to confirm the exact lamp type on the vehicle itself.
Fitment can differ between trims and lighting packages, especially if your 2015 Honda Fit has factory LED rear lighting or a different headlamp setup in another market. The headlight and daytime running light positions are listed as 9003, while several other locations use common halogen bulb types such as 7440, 7444NA, 168/917, 194/7441, or 2721. If you are considering an aftermarket LED conversion, make sure the bulb base, polarity, beam pattern, and housing clearance are compatible, since some reflectors and projectors are designed for halogen output. The best practice is to check the bulb already installed in your car before purchasing, especially for interior lights and any position that may have been changed by a previous owner.