Audi A4 2011 Bulb Size
Bulb size chart
This 2011 Audi A4 bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right replacement to each lamp on the car. Whether you are replacing an exterior signal bulb, an interior courtesy light, or a headlight bulb, checking the exact location first can save time and prevent ordering the wrong part.
The 2011 Audi A4 uses different bulb types depending on the lighting setup, and some positions vary with trim, market, body style, or factory lighting package. This page organizes the bulb chart by function so you can quickly find the fitment for your specific A4 before you buy.
For best results, compare the bulb listed here with the one already installed in your car before purchasing, especially if your A4 has had previous repairs or aftermarket lighting changes. Trim and package differences can affect fitment, and halogen and HID-equipped cars may use different bulbs for the same lamp position. If you are considering LED replacement bulbs or a conversion kit, make sure the new bulb matches the socket, size, and beam pattern requirements for that location. When in doubt, remove the old bulb and confirm the marking on the base before ordering.
FAQ
What is the headlight bulb size for a 2011 Audi A4?
The 2011 Audi A4 uses a D3S bulb for the headlight high beam and low beam position on the HID headlight setup.
Does the 2011 Audi A4 use different brake light bulbs depending on headlights?
Yes. Models with HID headlights use LED brake light bulbs, while models with halogen headlights use 7506R bulbs for the brake light position.
What bulb does the rear tail light use on a 2011 Audi A4?
Rear tail light fitment depends on the headlight package. HID-equipped cars use LED tail light bulbs, while halogen-equipped cars use 7506R bulbs.
What is the reverse light bulb size on this Audi A4?
The back up reverse light bulb is 921 on the 2011 Audi A4.
What bulb size is used for the front turn signal?
The front turn signal light bulb is 12272NA.
What bulb does the rear turn signal use?
The rear turn signal light bulb is 7506.
What are the fog light bulb options for the 2011 Audi A4?
The front fog light bulb options listed for this model are H11 LED and H16 LED, depending on the vehicle setup.
Which bulbs are used for interior lights like the map light and dome light?
The map light, glove box light, trunk or cargo area light, interior door light, and side marker light front all use 2825 or 98 bulbs. The dome light uses 6411 or 6428 bulbs.
What bulb size is used for the license plate light and vanity mirror light?
Both the license plate light and vanity mirror light use 6418 bulbs.
Are the center high mount stop light and daytime running light LED on the 2011 Audi A4?
Yes. The bulb chart lists both the center high mount stop light and the daytime running light as LED on this model.
Why do some 2011 Audi A4 bulb sizes vary by trim or market?
Lighting equipment can differ by trim, body style, market, and factory package, so the same year and model may use different bulbs in certain positions.
Should I check the installed bulb before ordering a replacement?
Yes. Checking the bulb already installed is the safest way to confirm fitment, especially if the car has aftermarket lighting or if the equipment has been changed previously.