💡Headlight Bulb Size
Mercedes GLA Headlight Bulb Size
Find the correct headlight bulb size for your Mercedes GLA. Covers low beam, high beam, fog lights, and turn signals for all years.
Quick Answer
The Mercedes GLA headlight bulb size depends on the model year and trim. Common sizes include H11 (low beam), 9005/HB3 (high beam), and H16 (fog lights) — see the full breakdown below.
2019-2024
2019-2024Low BeamLED (factory) or H11 equivalent
High BeamLED (factory) or 9005/HB3 equivalent
Fog LightsH16 or H11 (if equipped)
Turn Signal (Front)7440/T20 amber
Headlight TypeLED or LED projector (most trims)
Notes
- →Factory LED headlights are not user-replaceable — the entire assembly may need replacement
- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →LED upgrade bulbs are available but may cause CANBUS errors on some models
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
2014-2018
2014-2018Low BeamLED (factory) or H11 equivalent
High BeamLED (factory) or 9005/HB3 equivalent
Fog LightsH16 or H11 (if equipped)
Turn Signal (Front)7440/T20 amber
Headlight TypeLED or LED projector (most trims)
Notes
- →Factory LED headlights are not user-replaceable — the entire assembly may need replacement
- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →LED upgrade bulbs are available but may cause CANBUS errors on some models
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
Frequently Asked Questions
- What size headlight bulb does a Mercedes GLA use?
- The Mercedes GLA headlight bulb size varies by year. Newer models often use factory LED units, while older models use H11, H7, or 9006 halogen bulbs. Check the year-specific specs below for your exact fitment.
- Can I put LED bulbs in my Mercedes GLA?
- If your Mercedes GLA has halogen headlights, you can install LED replacement bulbs. Look for bulbs with a proper beam pattern (projector-compatible) to avoid blinding other drivers. Some models may need anti-flicker adapters.
- How do I replace the headlight bulb on a Mercedes GLA?
- On most Mercedes GLA models, you can access the headlight bulb from behind the headlight assembly in the engine bay. Twist the bulb socket counterclockwise, pull out the old bulb, insert the new one (don't touch the glass), and twist back in.
- Why does my Mercedes GLA headlight keep burning out?
- Frequent bulb burnout on the Mercedes GLA is usually caused by a loose connection, moisture in the housing, touching the bulb glass during installation, or a voltage regulator issue. Check the connector and housing seal.
Mercedes GLA Repair Guides
More Mercedes GLA Guides
Browse all Headlight Bulb Size pages →🔋Mercedes GLA Battery Location❄️Mercedes GLA Coolant Type🧪Mercedes GLA Fluid Capacities🛢️Mercedes GLA Oil Type & Capacity⚙️Mercedes GLA Serpentine Belt⚡Mercedes GLA Spark Plug Type💡Toyota 4Runner Headlight Bulb Size💡Toyota Avalon Headlight Bulb Size💡Toyota Camry Headlight Bulb Size💡Toyota Celica Headlight Bulb Size💡Toyota Corolla Headlight Bulb Size💡Toyota Echo Headlight Bulb Size💡Toyota Highlander Headlight Bulb Size💡Toyota Land Cruiser Headlight Bulb Size💡Toyota Matrix Headlight Bulb Size