Used for: Headlight Bulb High Beam and Low Beam
Used for: Daytime Running Light Bulb
The 2021 Mazda CX-30 uses a mix of LED and halogen lighting depending on the position, trim, and market. This page is designed to help you verify bulb sizes by lighting position so you can match the correct replacement before you buy. For this model year, several exterior and interior lights are listed as LED, while the daytime running light bulb is shown as H7 on some versions.
If you are replacing a burned-out bulb on a 2021 Mazda CX-30, it helps to confirm the exact lamp location first: headlight, fog light, brake light, turn signal, license plate light, cargo light, or another position. Because fitment can vary with body style and equipment package, checking the bulb chart by location is the safest way to avoid ordering the wrong part.
Fitment on the 2021 Mazda CX-30 can differ by trim, lighting package, and region, so do not assume every vehicle uses the same bulb type. Some positions are factory LED assemblies, which usually means the bulb is not replaced as a simple plug-in bulb and may require an assembly-level repair or a compatible LED module. If your CX-30 has halogen equipment in a specific position, an aftermarket LED conversion may not fit correctly or may create beam pattern, warning light, or legality issues. Before purchasing anything, remove the installed bulb or inspect the housing label to confirm what is actually in the vehicle, especially for the daytime running light and any front lighting that may differ between markets.
The chart shows the headlight high beam and low beam as LED, with D1S also listed for this position. Because lighting packages can vary, verify the exact headlamp setup on your CX-30 before ordering replacement parts.
Yes, the available list shows the daytime running light bulb as H7. That said, DRL fitment can vary by market and trim, so confirm the installed setup on your specific vehicle.
The front fog light bulb is listed as LED. On many LED-equipped vehicles, this may mean the light is part of an LED assembly rather than a standard replaceable bulb, so check the housing before buying a part.
The brake light bulb is listed as LED. If the brake light fails, you may need to replace the LED unit or assembly rather than a traditional bulb.
The front turn signal light bulb is listed as LED. Always confirm whether your CX-30 has a serviceable bulb or an integrated LED lamp before ordering.
The rear turn signal light bulb is listed as LED. As with other LED positions, replacement may involve the lamp assembly depending on the exact trim and market.
The back up reverse light bulb is listed as LED. If the reverse light is not working, inspect the full lamp unit and connector as well as the bulb listing.
The license plate light bulb is listed as LED. This is one of the positions where the exact replacement method can depend on the factory lamp design.
Yes, the available chart lists the tail light bulb, front side marker light bulb, and rear side marker light bulb as LED. That usually means the lighting is integrated and may not use a standard removable bulb.
The rear fog light bulb is listed as LED, and the trunk or cargo area light is also listed as LED. These positions may be simple bulb replacements on some versions, but confirm the installed part first.
Yes, the vanity mirror light bulb is listed as LED. Interior light designs can vary, so it is still smart to check the lamp before purchasing replacements.
Because the 2021 Mazda CX-30 can have different lighting setups depending on trim, market, and body style. The bulb chart helps you narrow down the correct bulb by position, but the exact fitment should still be confirmed on the vehicle.
