Audi Q3 Dome Light Bulb Size

The Audi Q3 dome light requires a bulb size of 12961 for proper installation and function within the interior lighting housing. Data for the specific component covers the range from 2015 to 2018.

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
2017-2018	12961 (For Vehicle Without Additional Interior Lights (QQ0))
2015-2016	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The 12961 is the sole dome light bulb type listed across all four model years covered in these specifications.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, fitted with a W2.1x9.5d base.
The W2.1x9.5d base is a wedge-style base where the electrical contacts are formed by the glass envelope itself rather than by metal pins or a separate cap, making correct orientation during installation straightforward.
The bulb operates at 12 volts with a 5-watt output, which is typical for low-current interior lighting applications in passenger vehicles.
The 12961 applies to the Audi Q3 across the 2015-2018 model years, indicating a consistent dome light socket specification throughout that production span.
For the 2017-2018 model years, the 12961 fitment is specifically noted for vehicles without the Additional Interior Lights package, referenced by option code QQ0, while the 2015-2016 entries carry no such conditional notation.