The upcoming sedan's styling has already been previewed by the dramatic M Concept Neue Klasse, which debuted at Le Mans in June and appeared again at Goodwood.
The concept builds on the chiseled look of the stock i3 sedan revealed last year and on sale this fall.
It is lower than the i3, with much wider fenders, a hood vent, yellow DRLs that could become an M hallmark, and a split rear trunk-lid spoiler with a huge diffuser.
While production details will be toned down, the show car offers a strong indication of where BMW M3 design is heading.
The good news for traditionalists is that a new gasoline-powered M3 with a mild-hybrid six-cylinder engine is also in development.
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Though the ICE car will use an updated CLAR platform and the EV rides on BMW's Neue Klasse architecture, they will look almost identical.