c400

C400 is an alphanumeric designation used across different industries to label models, parts, or product lines. There is no single object associated with the term, and the precise meaning depends on the context in which it appears.

In automotive contexts, C400 has been used as a model designation for variants of the Mercedes-Benz C-Class produced in the mid-2010s, typically signaling a performance-oriented trim with a turbocharged engine and all-wheel drive. Availability and specifications varied by market and model year.

In technology and electronics, C400 appears as a catalog or part number in multiple product families. Because such codes are not standardized, "C400" can refer to different devices—ranging from cameras or sensors to chassis components—depending on the vendor and product line.

Because alphanumeric codes like C400 are widely reused in branding and inventory systems, identifying the exact item requires additional context, such as the manufacturer, year, or product family. The term functions primarily as a label rather than a unique identifier.