The 2020 Mazda CX-30 uses different bulb types depending on the lighting position, trim level, and market, so this page is designed to help you verify the correct bulb size before you buy replacements. Use the listings here to match the bulb by location, whether you are checking the headlights, fog lights, brake lights, turn signals, license plate lights, or interior lamps.
For the 2020 Mazda CX-30, many exterior and interior lights are listed as LED, while the daytime running light bulb is shown as H7 on some applications. Because lighting equipment can vary by body style and package, it is important to confirm the exact bulb by position rather than assuming every CX-30 uses the same setup.
Fitment can vary by trim, lighting package, and market, especially on vehicles that may use LED assemblies on one version and halogen-style service parts on another. If your CX-30 has been modified, or if you are considering an aftermarket conversion, check whether the housing is designed for LED, halogen, or a specific bulb base before ordering. The safest approach is to inspect the installed bulb or the original lamp assembly first, then compare it with the bulb chart on this page so you avoid buying the wrong part.