Audi A3 2015 Bulb Size
Bulb size chart
This 2015 Audi A3 bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right part before you buy. Because Audi used different lighting setups across trims and markets, the exact bulb type can change depending on whether your car has halogen headlights or LED headlights.
Use this page to check exterior and interior bulb fitment for the 2015 Audi A3 in one place. You’ll find common locations such as the headlight, turn signal, brake light, license plate light, dome light, and cargo area light, which makes replacement work faster and helps reduce ordering mistakes.
Fitment can vary by trim, package, body style, and market, so always confirm your existing lighting setup before ordering. The 2015 Audi A3 may use halogen or LED headlight assemblies, and the bulb sizes are not always interchangeable between those systems. If you are considering aftermarket LED or HID conversions, make sure the bulb base, housing depth, and electrical compatibility are correct, since some upgrades may require additional adapters or may not be road-legal in every area. The safest approach is to compare the bulb listed here with the bulb already installed in your vehicle before purchase.
FAQ
What bulb does the 2015 Audi A3 use for the low beam headlight?
The low beam setup depends on the headlight type. Models with LED headlights use an LED low beam bulb, while models with halogen headlights use a D3S bulb for the combined high beam and low beam setup.
What is the high beam bulb on a 2015 Audi A3 with halogen headlights?
For halogen headlights, the high beam bulb is H15. On A3 models with LED headlights, the high beam bulb is listed as LED.
What bulb size fits the front turn signal on a 2015 Audi A3?
With LED headlights, the front turn signal bulb is LED. With halogen headlights, the front turn signal bulb is 64132.
What bulb is used for the rear turn signal on this car?
The rear turn signal bulb is LED on A3 models with LED headlights. On models with halogen headlights, the rear turn signal bulb is 5008.
What is the brake light bulb for the 2015 Audi A3?
With LED headlights, the brake light bulb is LED. With halogen headlights, the brake light bulb is 7440R.
What bulb fits the tail light on a 2015 Audi A3?
Tail light bulb fitment depends on the lighting package. Models with LED headlights use an LED tail light bulb, while models with halogen headlights use 921.
What bulb does the daytime running light use?
With LED headlights, the daytime running light bulb is LED. With halogen headlights, the daytime running light bulb is H15.
What bulb size is used for the license plate light?
The license plate light bulb is LED on the 2015 Audi A3.
What bulb fits the dome light and other interior lights?
Several interior positions use 2825 or 98, including the dome light, glove box light, trunk or cargo area light, interior door light, and parking light with halogen headlights.
What is the back up reverse light bulb for the 2015 Audi A3?
The back up reverse light bulb is 64132.
What bulb is used for the vanity mirror light?
The vanity mirror light bulb is 6418.
Do all 2015 Audi A3 models use the same bulbs?
No. Trim and lighting package can vary by market and body style, so the bulb type may differ between halogen and LED-equipped cars.
Can I replace halogen bulbs with LED bulbs on my A3?
Sometimes, but not always. Aftermarket LED conversions can require extra parts or may not fit correctly in the housing, so it is important to verify compatibility before buying.
What should I check before ordering replacement bulbs?
Check the lighting position, your headlight type, and the bulb currently installed in the car. Matching the installed bulb is the best way to avoid fitment problems.