C40

C40 is a designation used in several unrelated contexts. In automotive terms, it denotes Volvo Cars’ C40 model line. The C40 is a compact crossover with a coupe-like silhouette, designed as part of Volvo's electrification strategy. A variant called C40 Recharge is fully electric, offering multiple drive configurations and a sizeable battery to deliver electric performance. Volvo emphasizes sustainability in the interior and materials, and the model is marketed as a flagship for efficient, premium electric driving.

In urban policy, C40 refers to the C40 Cities Climate Leadership Group, an international network of large cities focused on reducing greenhouse gas emissions and building resilience to climate impacts. Founded in the mid-2000s, C40 coordinates city-level initiatives, shares best practices, and tracks progress toward climate targets among its member governments.

C40 thus most commonly refers to Volvo’s electric vehicle lineup and the climate-focused city network, though the alphanumeric designation may appear in other contexts as well.