Audi A3 2012 Bulb Size
Bulb size chart
This 2012 Audi A3 bulb size guide helps you verify the correct bulb for each lighting position before you buy replacements. Because fitment can change by trim, headlight type, and market, it is best to match the bulb to the exact location on the vehicle rather than relying on a single all-purpose listing.
Use this page to cross-check common exterior and interior bulbs on the 2012 Audi A3, including headlight, parking light, brake light, tail light, license plate light, and cabin bulbs. The chart is organized by lighting position so you can quickly find the right size for your specific A3 setup.
Fitment on the 2012 Audi A3 can vary with body style, lighting package, and whether the car uses halogen or HID headlights. For example, halogen and HID versions use different parking light, side marker, and daytime running light bulb sizes, and some fog light setups may accept different bulb types depending on the trim. If you are considering LED upgrades or an aftermarket conversion, make sure the bulb base, physical length, and connector style match the original housing. It is always smart to remove and inspect the installed bulb before ordering, especially for interior lights and any exterior lamp that may have been changed by a previous owner.
FAQ
What bulb size does the 2012 Audi A3 use for the low beam and high beam headlights?
The 2012 Audi A3 uses D3S bulbs for the headlight high beam and low beam application on the listed HID setup.
Which bulb fits the daytime running light on a 2012 Audi A3 with halogen headlights?
For halogen headlights, the daytime running light bulb is listed as 5201.
Which bulb fits the daytime running light on a 2012 Audi A3 with HID headlights?
For HID headlights, the daytime running light bulb is listed as LED.
What is the rear turn signal bulb size on the 2012 Audi A3?
The rear turn signal light bulb is 7507.
What bulb is used for the reverse light on this Audi A3 year?
The back up reverse light bulb is 921.
What are the brake and tail light bulb sizes for the 2012 Audi A3?
Both the brake light bulb and the tail light bulb are listed as 7506R.
What bulb size is used for the license plate lights?
The license plate light bulb is 6418.
Which bulb fits the dome light in the 2012 Audi A3?
The dome light bulb is listed as 6411 or 6428, depending on the exact lamp assembly.
What bulb size is used for the map light?
The map light bulb is 64111.
What bulb fits the glove box and trunk or cargo area lights?
Both the glove box light bulb and the trunk or cargo area light bulb are listed as 2825 or 98.
Do halogen and HID versions of the 2012 Audi A3 use the same parking light bulb?
No. Halogen headlight models use 2825 or 98 for the parking light, while HID headlight models use 2827.
Do the front side marker bulbs differ between halogen and HID headlight setups?
Yes. Front side marker bulbs with halogen headlights use 2825 or 98, while HID headlight versions use 2827.
What fog light bulb sizes are listed for the 2012 Audi A3?
The front fog light bulb is listed as H11 LED or H16 LED, depending on the specific fog light setup.
Should I check the bulb already installed before ordering replacements?
Yes. Checking the installed bulb is the safest way to confirm fitment, especially on a 2012 Audi A3 with different trim levels, lighting packages, or prior aftermarket changes.