The Mercedes-Benz Metris fog light requires a specific H11 bulb size for proper installation and operation. Data for the bulb size covers the range from 2023 to 2023.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz Metris uses the H11 bulb for its front fog lights across the 2016-2023 model years. The H11 is a single-filament halogen bulb operating at 12V and 55W, fitted with a PGJ19-2 base, and is rated under the ECE standard used in Europe and worldwide, with approval also extended to the United States market.
The rear fog lights on the Metris use the P21W bulb, a single-filament signalling bulb rated at 12V and 21W. Unlike the H11, the P21W uses a BA15s bayonet base rather than a plug-style connector, which means the two bulb types are not interchangeable despite both operating on a 12V system.
The P21W is governed by the ECE standard and is widely used in European and international vehicle lighting applications. Its 21W output is substantially lower than the 55W rating of the H11, reflecting the different functional roles of signalling versus forward illumination.
The BA15s bayonet base of the P21W is a single-contact design. Substituting a dual-contact bayonet bulb such as the BA15d or P21/5W in its place would result in an incorrect fitment, as the base configurations are physically distinct.
The H11 PGJ19-2 base is keyed to prevent incorrect installation of related but incompatible bulbs in the H-series family, such as the H8 or H9, which share a similar physical form but differ in wattage and base coding.
The front fog light specification of H11 applies uniformly to the Metris across all eight model years listed, from 2016 through 2023, indicating no change in the front fog light housing design over that period.