Mercedes-Benz GLA Bulb Size by Year
The 2021-2026 Mercedes-Benz GLA has factory LED headlights, so there is no headlight bulb to replace. 2015-2020 models use an H7 low beam and an H7 high beam.
Headlight bulbs by model year
| Model years | Low beam | High beam | Fog | Buy |
|---|---|---|---|---|
| 2021-2026 | LED | LED | LED | |
| 2015-2020 | H7 | H7 | H8 | Shop H7 |
LED means the headlight is a sealed LED unit from the factory, so there is no bulb to buy. Some trims differ from the base car, so check the bulb you are removing. Shop links go to Amazon, and we may earn a commission at no extra cost to you. Open your exact year below for every bulb position and sources.
Every GLA year
Sources. The bulb code for 5 of 12 model years is checked against a cited source, most often amazon.com H247 LED assembly 2021-23, go-parts.com GLA/GLB H247 LED guide and auxbeam.com X156 H7 LED upgrade. Each year page lists its own sources.
Last verified 2026-06-19. Maintained by Matan B., who runs GarageDex. How we verify.