The 2021 Mazda CX-30 uses either D1S or LED headlights for both the low-beam and high-beam functions, depending on the installed headlight configuration. Check the existing headlamp assembly before ordering: D1S and LED systems are different setups and should not be treated as interchangeable.
The daytime running light uses an H7 bulb. The fog lights, front and rear turn signals, reverse lights, brake lights, center stop light, tail lights, license plate lights, side markers, trunk light, and vanity light are listed as LED applications.
- Low beam: D1S or LED
- High beam: D1S or LED
- Daytime running light: H7
- Fog light and exterior signal lighting: LED
- Interior trunk and vanity lighting: LED
Because the headlight type is the key variation for this model year, verify whether your CX-30 has the D1S or LED setup before selecting replacement parts. The supplied fitment data does not list a separate replaceable bulb code for the other LED applications.