Fitment Guaranteed for 2018 Audi A3

2018 Audi A3 Bulb Sizes

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Full Bulb Size Chart

PositionBulb SizeShop
Low Beam
HID-D5S LEDCheck Price on Amazon
High Beam
HID-D5S LEDCheck Price on Amazon
Fog Light
H8 LEDCheck Price on Amazon
Brake Light
High Mount Brake LightCheck Price on Amazon
Dome Light
2825Check Price on Amazon
Side Marker
LED BulbsCheck Price on Amazon
Turn Signal Front
12181NACheck Price on Amazon
License Plate
2825Check Price on Amazon
Map Light
2825Check Price on Amazon
Parking Light
LED BulbsCheck Price on Amazon
Turn Signal Rear
LED BulbsCheck Price on Amazon
Reverse Light
LED BulbsCheck Price on Amazon
Trunk Light
2825Check Price on Amazon
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Frequently Asked Questions

The 2018 Audi A3 uses a HID-D5S LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

The high beam bulb size for the 2018 Audi A3 is HID-D5S LED.

Yes, the 2018 Audi A3 takes a H8 LED bulb for the fog light position.
Disclaimer

Bulb sizes can vary by trim level. Always check your owner's manual or remove the existing bulb to verify the size before purchasing. We may earn a commission from links on this page.