Audi Q5 Sportback headlight bulb sizes include 9006 and H8 for high beam and D5S for low beam replacement bulbs. The chart covers 2021 through 2024 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Audi Q5 Sportback uses three distinct bulb types across its headlight positions: 9006, H8, and D5S.
The D5S is the low beam bulb for the Q5 Sportback across the 2021-2024 model years. It is an HID (xenon) discharge type operating at 12V and 25W, built to the ECE standard used in Europe and worldwide, and fitted with a PK32d-7 base in a low-voltage compact form.
The high beam position of the 2021-2023 Q5 Sportback uses the H8, a single-filament halogen bulb rated at 12V and 35W. It carries a PGJ19-1 base and conforms to the ECE standard, though it also holds approval for use in the United States.
The 2024 Q5 Sportback high beam shifts to the 9006, a single-filament halogen bulb rated at 12V and 55W. The 9006 follows the ANSI standard applicable in the US and Canada and uses a P22d base.
The 9006 and H8 are not interchangeable. Beyond their different base types (P22d versus PGJ19-1), they differ in wattage by 20W, and substituting one for the other would result in an improper fit and incorrect light output.
The H8 and D5S operate on fundamentally different technologies. The H8 is a halogen bulb that produces light by heating a tungsten filament, while the D5S is a xenon discharge bulb that produces light through an electrical arc between two electrodes in a gas-filled chamber. The two types require different ballast and socket configurations and are not interchangeable.
At 25W, the D5S draws notably less power than either halogen type used in the high beam position, which reflects the higher luminous efficiency of HID discharge technology relative to halogen.
The base type of a bulb determines its physical socket compatibility. The P22d (9006), PGJ19-1 (H8), and PK32d-7 (D5S) are three distinct base standards, meaning none of the three bulb types used in the Q5 Sportback shares a socket with another.