Mitsubishi i-MiEV Map Light Bulb Size

The Mitsubishi i-MiEV map light uses a DE3175 bulb size for interior illumination. Replacement specifications are documented across the 2012 to 2017 production chart.

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
2016-2017	DE3175
2014	DE3175
2012	DE3175

Bulb Specifications

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

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Additional Notes

The Mitsubishi i-MiEV uses the DE3175 bulb size across all listed model years for the map light position.
The DE3175 is an ANSI-standardized bulb type, meaning its physical and electrical specifications follow a defined industry standard recognized in the United States and Canada.
DE3175 bulbs belong to the festoon category, a design in which the bulb is cylindrical and makes contact at both ends rather than through a base socket.
The "31mm" in the DE3175 designation refers to the length of the bulb, which is the critical fitment factor for festoon-type bulbs in map light housings.
End-cap contacts on the DE3175 mean the bulb seats by pressing its two flat metal ends against spring-loaded clips within the fixture, with no separate socket or plug connector involved.
The DE3175 operates at 12 volts, consistent with standard automotive electrical systems.
The DE3175 specification applies to the 2012, 2014, 2016, and 2017 model years of the i-MiEV, indicating a consistent map light housing design across that production span.
Because festoon bulbs are sized by length, substituting a festoon bulb of a different length, such as a 28mm or 36mm unit, would result in an improper fit even if the voltage rating matched.