Audi SQ5 Sportback Back Up Light Bulb Size

The Audi SQ5 Sportback back up light requires a 921 bulb size for proper installation and function within the rear lighting assembly. Available data for the specific bulb requirements covers the period from 2021 through 2024.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2023-2024	921
2021	921

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

Other Locations

Additional Notes

The Audi SQ5 Sportback uses the 921 bulb for its back up light across the 2021-2024 model years, with the exception that 2022 is not represented in the specifications.
The 921 is classified under the ANSI standardization system, which governs bulb designations used in the United States and Canada.
This bulb follows the T15 wedge form factor, a design in which the base tapers to a flat, blade-like shape that inserts directly into a socket without requiring a separate connector or locking mechanism.
The 921 operates at 12 volts and draws 16 watts, figures consistent with standard automotive reverse light applications.
The wedge base of the T15 format means fitment depends on socket compatibility rather than a bayonet or screw-in interface, so substitutions must match both the base type and the physical size of the housing.