Volkswagen chief executive Matthias Muller may step down as part of a ‘management shake-up’ due to be announced by the German car manufacturer tomorrow, according to reports.

Muller, who took the helm in the wake of 2015’s dieselgate scandal, is expected to vacate his post and a place on the board of directors at Porsche, reports in the German press have claimed.

In its report into the possible changes, the Financial Times said that “cryptic statements” issued by the two German brands had alluded to the changes, which could see Herbert Diess, currently head of the VW passenger car brand, take the top job.

While in the chief executive post, Muller has overseen Volkswagen’s move ahead of Toyota to become the world’s largest carmaker by sales.

He also planned the €34bn investment which will pave the way for greater electrification in the Volkswagen Group’s brands.