Toyota GR Corolla Tail Light Bulb Size

The Toyota GR Corolla tail light requires a 194 bulb size for the specific lighting component located at the rear of the vehicle. Data for the bulb specifications covers the period from 2023 through 2024.

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	US Type	EU Type	Shop
2023-2024	194	W5W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194	Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W.	W5W	Check Price

Other Locations

Additional Notes

The 194 bulb is the tail light bulb size for the Toyota GR Corolla across the 2023-2024 model years.
The 194 bulb follows the ANSI standard, which is the American National Standards Institute classification system used in the United States and Canada to define bulb specifications uniformly.
It is a T10 miniature wedge-base bulb, meaning it uses a wedge-shaped base that friction-fits directly into the socket without a separate metal connector or bayonet pins.
The 194 bulb operates at 12 volts and draws 3.78 watts, placing it in the low-wattage range typical of indicator and marker lighting applications.