Mazda 5 Dome Light Bulb Size

The Mazda 5 dome light uses a DE3175 bulb size for interior illumination across the model line. Replacement specifications in the chart span 2006 to 2015 production years.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2012-2015	DE3175
2006-2010	DE3175

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The DE3175 is the sole dome light bulb size specified for the Mazda 5 across all listed model years from 2006 to 2015, with the exception of 2011, which is not included in the specifications.
The DE3175 follows the ANSI standard, meaning it conforms to the dimensional and electrical requirements recognized in the United States and Canada.
The DE3175 is a festoon-type bulb, a form factor defined by a cylindrical body held between two end-cap contacts rather than a screw base or wedge base.
The bulb body measures 31mm in length, which is the defining physical characteristic that distinguishes it from other festoon sizes such as the DE3021 or DE3022.
Electrical contact is made through metal end caps at both ends of the bulb, a design that requires the socket to grip both terminals simultaneously for the circuit to close.
The DE3175 operates at 12 volts, consistent with the standard electrical system voltage found in conventional passenger vehicles.
Because the DE3175 is an ANSI-standardized size, aftermarket and OEM replacements from different manufacturers are generally interchangeable as long as the 31mm festoon form factor and 12V rating are maintained.
The consistent use of the DE3175 across the full 2006-2015 model year range of the Mazda 5 indicates that the dome light socket design remained unchanged throughout that production span.