In 2016, BMW’s charitable arm was consolidated under the name BMW Foundation Herbert Quandt. It is now a major global charity, with about $150 million in assets, supporting sustainability goals and impact investing. Stefan Quandt and Ms. Klatten are among its founding donors. If the foundation’s website is to be believed, Herbert Quandt’s entire biography consists of one act: He “secured the independence” of BMW. The charity’s motto is to promote “responsible leadership” and inspire “leaders worldwide to work towards a more peaceful, just and sustainable future.” BMW and its controlling shareholders, Mr. Quandt and Ms. Klatten, aren’t unique in...