Volkswagen CC Back Up Light Bulb Size

The Volkswagen CC back up light utilizes bulb size 921 or H6W depending on the specific version of the component. Data for the lighting specifications covers the range from 2009 through 2013.

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
2013	921
2009-2012	H6W

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921
ECE standard (Europe & worldwide). Single-filament signalling bulb with BAX9s base. 12V, 6W.	H6W

Other Locations

Additional Notes

The Volkswagen CC uses two distinct back up light bulb types across its model years: the 921 and the H6W, each originating from different international standards bodies.
The H6W follows the ECE standard, which governs vehicle lighting regulations across Europe and much of the world, while the 921 follows the ANSI standard used in the United States and Canada.
The H6W is specified for the Volkswagen CC across the 2009-2012 model years, making it the more prevalent of the two bulb types in this fitment range.
The 921 is specified exclusively for the 2013 Volkswagen CC, representing a shift to the ANSI-standard bulb in that model year.
The 921 is a T15 wedge-type bulb, meaning it uses a wedge-shaped plastic base that friction-fits directly into the socket without a separate locking mechanism.
The H6W uses a BAX9s base, which is an offset pin base that requires rotational alignment during installation, and it is not physically interchangeable with the wedge-style 921 socket.
The 921 operates at 12V and 16W, while the H6W operates at 12V and 6W, meaning the two bulbs draw significantly different wattage despite sharing the same operating voltage.
Because the 921 and H6W use incompatible base types, a bulb specified for the 2009-2012 model years cannot be fitted into the 2013 socket, and vice versa.
The H6W is classified as a single-filament signalling bulb, a construction type associated with on/off switching functions such as reverse lighting rather than variable-intensity applications.