Mercedes-Benz GLA250 Tail Light Bulb Size

The Mercedes-Benz GLA250 tail light requires a bulb size of 921 for the specific lighting component located at the rear of the vehicle. Data for the bulb specifications covers the range from 2017 to 2020.

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

Outer Tail Light

YearsBulb Size
2015-2016921

Tail Light

YearsBulb Size
2020921 (Halogen)
2017-2019921

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.921

Other Locations

Additional Notes