In that 3-Series-sized space, the i3 packs quite a lot of equipment. Much of it is electric-car kit, including things like Brake Energy Regeneration, which recoups kinetic energy as stored electricity in the battery, and lets the accelerator pedal act as a brake. BMW says the behavior is much like engine braking with a manual-transmission combustion engined car.
Navigation is available, and in addition to guiding you to your planned destination, it can remember your driving style and let you know if your chosen route is too long for the battery charge state, or if it will require a charge before the return trip.
Three trims will be offered, but as this is an electric vehicle, there's a different word for that: "Worlds." The three Worlds are Mega, Giga, and Tera. Mega is standard in the U.S., and includes 19-inch forged wheels with unique aspect-ratio 155/70 tires for low rolling resistance; BMW Navigation; BMW ConnectedDrive with eCall; BMW iRemote; alarm system; 7.4-kW on-board charger; LED headlights, daytime running lights, and tail lights. The cabin of the base Mega World i3 is upholstered in Sensatec and sustainable cloth made from recycled materials. A leather-trimmed steering wheel is also standard.
The Giga World i3 starts with those same features and adds or substitutes unique 19-inch wheels; a leather-wrapped interior; and wool cloth upholstery. A sunroof, satellite radio, and contrast stitching area also included with the Giga World package. The Tera World i3 is the top-line model, getting its own take on the 19-inch wheel look, full-leather interior (the leather is tanned with olive leaves), textile accents, and anthracite floor mats.