Audi A5 2017 Bulb Size
Bulb size chart
This 2017 Audi A5 bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right part before you order. Use it to check exterior and interior bulb fitment for the front, rear, and cabin lighting on your A5.
Because Audi used different lighting setups depending on trim, market, and body style, the exact bulb type can vary. This page is organized by location to make it easier to confirm the bulb size for each lamp on the 2017 Audi A5.
For best results, compare this guide with the bulb already installed in your vehicle before buying replacements. Trim and lighting package differences can affect fitment, especially on cars with halogen versus LED equipment or with factory lighting upgrades. If you are considering aftermarket LED conversions, make sure the bulb base, polarity, and housing clearance are compatible, since not every LED replacement will fit or function correctly. When in doubt, remove the old bulb and verify the part number or base style first, especially for exterior lamps where the wrong bulb can trigger warning messages or poor beam performance.
FAQ
What bulbs does a 2017 Audi A5 use for the low beam headlights?
The 2017 Audi A5 uses D3S bulbs for the low beam headlights on the listings shown for this page.
What is the high beam bulb size on the 2017 Audi A5?
The high beam headlight bulb is listed as D3S for this model year.
What bulb fits the front fog light on a 2017 Audi A5?
The front fog light bulb is listed as H8 LED on this page.
What bulb size is used for the rear backup/reverse light?
The rear reverse light uses a 921 bulb.
What bulb is used for the front turn signal on the 2017 Audi A5?
The front turn signal bulb is listed as 12181NA.
Are the rear exterior lights on this Audi A5 all the same bulb type?
No. The rear lighting positions are listed separately, including brake light, tail light, parking light, rear turn signal, side marker, fog light, and center high mount stop light, and many of those are LED-equipped on this page.
Does the 2017 Audi A5 use LED bulbs in the tail lights?
Yes, the tail light bulb is listed as LED for this model year on the page.
What bulb size is used for the glove box light?
The glove box light bulb is listed as 2825.
What bulb size fits the map light and trunk/cargo area light?
Both the map light and the trunk or cargo area light are listed as 2825 bulbs.
What bulb is used for the vanity mirror light?
The vanity mirror light bulb is listed as 6418.
What is the cornering light bulb on a 2017 Audi A5?
The cornering light bulb is listed as H7, with H7 LED also shown as an option on this page.
Why should I check my trim before ordering bulbs for a 2017 Audi A5?
Trim and lighting package can vary by market and body style, so some bulb types may differ depending on how the car was equipped from the factory.
Can I replace factory bulbs with LED upgrades on this Audi A5?
Yes, some positions may support LED replacements, but fitment depends on the housing, bulb base, and vehicle electronics. Always confirm compatibility before buying.
What is the safest way to confirm the right bulb for my 2017 Audi A5?
The safest method is to compare the bulb chart with the bulb already installed in the vehicle, since exact fitment can vary by lighting package and region.