Audi Q5 2018 Bulb Size
Bulb size chart
The 2018 Audi Q5 uses a mix of LED and halogen-style bulb sizes depending on the lighting position and the headlight package. This page is designed to help you verify the correct bulb size by location, so you can match the right bulb to the right lamp before ordering replacements.
Because Audi offered different lighting setups for the 2018 Q5, the bulb chart can vary by market, trim, and body style. Use the position-based listings to confirm everything from exterior signal lamps to interior courtesy lights, reverse lights, and cargo-area lighting.
For the best fitment results, always compare your vehicle’s installed bulb and headlight package before buying. The 2018 Audi Q5 may use LED lighting in many positions, while some versions with HID headlights use different front turn signal and headlight bulbs than LED-equipped models. Trim and package differences can change the exact setup, and aftermarket LED conversions may not match factory specifications or may require additional components. If you are unsure, remove the existing bulb and check the marking on the base before ordering a replacement.
FAQ
What bulb size does the 2018 Audi Q5 use for the low beam and high beam headlights?
It depends on the headlight package. Q5 models with LED headlights use an LED headlight setup for both high beam and low beam, while models with HID headlights use D5S bulbs.
Which front turn signal bulb fits the 2018 Audi Q5 with LED headlights?
For Q5 models equipped with LED headlights, the front turn signal bulb is listed separately for that package and is LED.
Which front turn signal bulb fits the 2018 Audi Q5 with HID headlights?
For Q5 models with HID headlights, the front turn signal bulb is 64132.
What is the reverse light bulb size on the 2018 Audi Q5?
The back up reverse light bulb is 921.
What bulb does the rear fog light use on the 2018 Audi Q5?
The rear fog light bulb is 921.
What bulb size is used for the glove box light on the 2018 Audi Q5?
The glove box light uses 2825 or 98.
Are the brake lights and tail lights on the 2018 Audi Q5 LED?
Yes, the listed brake light bulb and tail light bulb positions are LED on this page.
Does the 2018 Audi Q5 use LED bulbs for interior lights?
Yes, the dome light, map light, vanity mirror light, trunk or cargo area light, interior door light, and stepwell light are listed as LED.
What bulb size is used for the license plate lights on the 2018 Audi Q5?
The license plate light bulb is LED.
Do parking lights and daytime running lights use the same bulb type on the 2018 Audi Q5?
Both positions are listed as LED, but they are separate lighting functions and should be matched by position rather than assumed to be interchangeable.
Can trim or market differences change the bulb size on a 2018 Audi Q5?
Yes. Trim level, lighting package, market, and body style can affect the bulb setup, so it is important to verify the installed bulb and headlight type before ordering.
Should I replace LED bulbs on the 2018 Audi Q5 with aftermarket LED parts?
Only if the replacement matches the factory fitment and function. Some aftermarket LED conversions may not work correctly with Audi’s lighting system or may require extra parts.