1. The Batteries 
Source: BMW

The Generation 5 batteries in the BMW i4 are modular and use flat cells, which means to add more power, the carmaker would just have to add more layers. In 2018, the German automaker invested close to 200 million Euros in an all-new production line just for the new BMW electrics to be launched over the next seven years. To this end, the batteries have been placed at the bottom of the floor, with the motors at the four corners, much like a skateboard. They result in a slight increase in height compared to the 4-series, but you’ll hardly notice the difference.