Audi Q7 2021 Bulb Size
Bulb size chart
The 2021 Audi Q7 uses a mix of LED and, on some configurations, HID lighting, so the correct bulb can depend on the exact position and equipment package. This page is designed to help you verify bulb sizes by lighting position, making it easier to match the right replacement for headlights, interior lamps, exterior markers, and cargo-area lights.
Because Audi offered different lighting setups by market and trim, the same 2021 Q7 may not use the same bulb type across every section of the vehicle. Use the bulb chart on this page to confirm the fitment for each light before ordering, especially if you are replacing a single bulb or comparing front and rear lighting components.
For the best fitment results, always compare your vehicle’s trim, lighting package, and headlamp type before buying. Some 2021 Audi Q7 models use LED headlight assemblies, while others may have HID headlights, and the bulb requirements are not the same. Aftermarket conversions can also change what fits or what works correctly, particularly if a prior owner modified the lighting system. If possible, check the installed bulb or the housing label before purchase, since market differences and body-style variations can affect the exact part needed.
FAQ
What bulb sizes does the 2021 Audi Q7 use for the headlights?
The 2021 Audi Q7 can use LED or HID headlight setups depending on the vehicle. For LED headlights, the chart lists LED for the low beam and high beam positions, and LED for the combined high beam and low beam setup. For HID headlights, the chart lists D5S for the headlight high beam and low beam and 64132 for the front turn signal with HID headlights.
Does every 2021 Audi Q7 use the same bulb for the rear turn signal?
No. The rear turn signal bulb is listed as LED, but fitment can still vary by lighting package and market. It is best to confirm the exact rear lamp configuration on your Q7 before ordering replacement parts.
What is the license plate light bulb size on a 2021 Audi Q7?
The license plate light bulb is listed as LED for the 2021 Audi Q7. If your license plate light is not working, confirm whether the issue is the LED module, the housing, or the wiring rather than assuming a standard replaceable bulb.
What bulb is used for the reverse light on this model year?
The back up reverse light bulb is listed as 921 for the 2021 Audi Q7. This is one of the few positions on the page that uses a non-LED bulb size.
What bulb size is used for the rear fog light?
The rear fog light bulb is listed as 921. As with the reverse light, check the lamp housing and vehicle specification before purchase to make sure the replacement matches your Q7’s setup.
Are the interior map lights and dome lights replaceable with standard bulbs?
The chart lists LED for the dome light, map light, vanity mirror light, glove box light, trunk or cargo area light, and stepwell light. On many Q7 models these are integrated LED units, so replacement may involve the full module rather than a simple loose bulb.
What is the front side marker bulb size on the 2021 Audi Q7?
The front side marker light bulb is listed as LED. Because Audi may use different lighting assemblies by trim or market, verify the front lamp design before ordering a replacement.
What bulb size is used for the rear side marker light?
The rear side marker light bulb is listed as 2821. If you are replacing a rear marker lamp, make sure the bulb base and housing match the installed part on your specific Q7.
Can I use aftermarket LED conversions on a 2021 Audi Q7?
You can, but fitment and performance may vary. Aftermarket LED conversions may trigger warnings, cause uneven beam patterns, or not fit correctly in housings designed for HID or factory LED systems. Always confirm compatibility before installing a conversion kit.
How do I know whether my Q7 has LED headlights or HID headlights?
Check the vehicle’s trim, build sheet, window sticker, or the headlamp housing itself. The 2021 Audi Q7 may have LED headlights on some versions and HID headlights on others, and the bulb chart uses different part types for each setup.
What bulb sizes are listed for the interior door lights?
The interior door light bulb is listed as 2825, 98. If you are replacing a door courtesy light, compare the old bulb and the socket carefully because these small interior bulbs can look similar but still differ in fit.
Why should I verify bulb size by lighting position on this page?
Because the 2021 Audi Q7 does not use one universal bulb type for every lamp. The correct replacement depends on the exact lighting position, such as low beam, rear turn signal, license plate light, or cargo light, and this page organizes the fitment by location to reduce mistakes.