What is BMW's electric vehicle sub-brand called?

What is BMW's electric vehicle sub-brand called? It is called BMW i.

BMW i is the BMW sub-brand created in 2011 for plug-in electric vehicles and related mobility technology. Its first production models were the i3, a battery-electric city car, and the i8, a plug-in hybrid sports car. Both were designed to showcase lightweight construction and a more sustainable approach to vehicle development.

The i3 entered series production in September 2013 and used an unusual carbon-fiber-reinforced-plastic passenger cell. The i8 combined a small gasoline engine with an electric motor, showing that BMW i initially covered both fully electric and plug-in hybrid vehicles.

BMW later expanded electrification beyond the original standalone i models. Vehicles such as the iX3, i4, i5, i7, and iX carry the lowercase “i” designation, although they are integrated more closely with BMW’s mainstream model lineup. BMW X refers mainly to SUVs and crossovers, while BMW M focuses on performance cars; neither is the electric sub-brand.

The “i” therefore identifies BMW’s electrified family, not a separate automaker.