Toyota MR2 Tail Light Bulb Size

The Toyota MR2 tail light requires a 1157 bulb size for proper illumination and function within the rear housing assembly. Available information covers the specific time range from 1985 through 1995 for the specified vehicle components.

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
1991-1995	1157
1985-1989	1157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157

Other Locations

Additional Notes

The Toyota MR2 uses the 1157 bulb for tail lights across the 1985-1995 model years, with the exception of 1990.
The 1157 is a dual-filament bulb, meaning it serves two lighting functions within a single unit, typically combining stop light and running light operation.
The 1157 operates at 12 volts with a wattage split of 21W for the high-intensity filament and 5W for the low-intensity filament, reflecting its dual-function design.
The 1157 uses a BAY15d bayonet base, which features two offset pins at different heights to prevent incorrect installation of the bulb.
The 1157 conforms to ANSI standards and is rated for use in the United States and Canada, indicating compliance with North American automotive lighting requirements.
The BAY15d base of the 1157 is not interchangeable with single-filament bayonet bases such as the BA15s, as the pin offset configuration differs between the two types.