Audi A3 2020 Bulb Size
Bulb size chart
This 2020 Audi A3 bulb size guide helps you verify the correct bulbs by lighting position, so you can replace the right lamp without guesswork. Whether you are changing an exterior signal bulb or a small interior courtesy light, using the bulb chart for your exact position makes the job much easier.
The 2020 Audi A3 can use different lighting setups depending on trim, market, and body style, so it is smart to confirm the bulb type before ordering. This page lists the common bulb sizes for the A3 by location, including headlight, brake light, turn signal, dome light, map light, glove box light, and cargo area light positions.
Fitment can vary on the 2020 Audi A3 because some cars use different lighting packages, and some exterior lamps may be halogen or LED depending on trim and region. If your A3 has been modified with aftermarket lighting, or if a previous owner installed conversion parts, the bulb listed on the chart may not match what is currently in the housing. The safest approach is to check the installed bulb before buying replacements, especially for headlight and fog light positions where LED and halogen setups can differ. When in doubt, compare the old bulb’s base, shape, and connector style to the chart so you get the correct fit the first time.
FAQ
What is the low beam bulb size for a 2020 Audi A3?
The low beam headlight bulb listed for the 2020 Audi A3 is D3S.
What bulb does the 2020 Audi A3 use for the high beam?
The high beam bulb listing for the 2020 Audi A3 is H16 LED or H8 LED, depending on the lighting setup.
What is the front fog light bulb size on a 2020 Audi A3?
The front fog light bulb listed for the 2020 Audi A3 is H8 LED.
What bulb size is used for the brake light on this model?
The brake light bulb listed for the 2020 Audi A3 is 7440.
What is the rear turn signal bulb size for a 2020 Audi A3?
The rear turn signal light bulb listed for the 2020 Audi A3 is 921.
What bulb size is used for the tail light on a 2020 Audi A3?
The tail light bulb listed for the 2020 Audi A3 is 921.
What is the glove box light bulb size?
The glove box light bulb listed for the 2020 Audi A3 is 194.
What bulb fits the trunk or cargo area light?
The trunk or cargo area light bulb listed for the 2020 Audi A3 is 194.
What bulb size is used for the dome light?
The dome light bulb listed for the 2020 Audi A3 is 194.
What bulb size is used for the map light?
The map light bulb listed for the 2020 Audi A3 is 194.
Can trim level or market change the bulb size on a 2020 Audi A3?
Yes. Trim, lighting package, market, and body style can change the exact bulb setup, especially for exterior lighting.
Should I check the old bulb before ordering a replacement?
Yes. Checking the installed bulb is the best way to confirm fitment, especially if the car has LED upgrades or aftermarket conversions.