Audi A3 2009 Bulb Size
Bulb size chart
This page helps you verify bulb sizes for the 2009 Audi A3 by lighting position, so you can match the correct bulb to the exact lamp on the car. Because the A3 can use different lighting setups, it is important to check the bulb chart for the specific headlight and trim configuration before ordering replacements.
For the 2009 Audi A3, the listed bulb sizes cover exterior and interior lights such as headlights, fog lights, turn signals, brake lights, license plate lights, dome lights, map lights, and cargo-area lamps. Use the position-specific fitment details here to avoid confusion between halogen and HID-equipped models.
Fitment can vary by market, body style, trim, and lighting package, so a bulb that works on one 2009 Audi A3 may not fit another. Halogen and HID headlight versions use different bulbs for some positions, and aftermarket LED conversions can change compatibility, beam pattern, or warning-light behavior. Before buying, check the bulb already installed in your vehicle and compare it with the chart, especially for exterior lamps where the same position may have more than one valid size depending on equipment.
FAQ
What headlight bulb does the 2009 Audi A3 use?
The 2009 Audi A3 uses D3S for the high beam and low beam headlight bulb position on the HID headlight setup listed for this page.
What is the daytime running light bulb for the halogen headlight version?
For 2009 Audi A3 models with halogen headlights, the daytime running light bulb is 5201.
What is the daytime running light bulb for the HID headlight version?
For 2009 Audi A3 models with HID headlights, the daytime running light bulb is LED.
What bulb fits the rear turn signal on a 2009 Audi A3?
The rear turn signal light bulb is 7507.
What bulb fits the reverse light on this Audi A3 year?
The back up reverse light bulb is 921.
What bulb is used for the brake light and tail light?
Both the brake light bulb and tail light bulb are listed as 7506R.
What bulb fits the front fog light?
The front fog light bulb is listed as H11 LED or H16 LED, depending on the specific lamp setup.
What bulb is used for the license plate light?
The license plate light bulb is 6418.
What bulb fits the glove box, trunk, and some interior courtesy lights?
The glove box light bulb and trunk or cargo area light bulb are listed as 2825 or 98. The courtesy light bulb is 6418.
What bulb fits the dome light and map light?
The dome light bulb is listed as 6411 or 6428, and the map light bulb is 64111.
What bulb is used for the vanity mirror light?
The vanity mirror light bulb is 6418.
Do parking light and side marker bulb sizes change with headlight type?
Yes. With halogen headlights, the parking light bulb and front side marker bulb are 2825 or 98. With HID headlights, both positions use 2827.
Can trim or market differences affect bulb fitment on the 2009 Audi A3?
Yes. Trim level, lighting package, body style, and market can change bulb fitment, so it is best to confirm the installed bulb before purchasing replacements.
Should I buy LED replacements for every bulb position?
Not automatically. Some positions are listed as LED from the factory, while others use standard bulb types. Aftermarket LED upgrades may fit physically but can still cause compatibility or beam-pattern issues, especially in exterior lighting.