STOCKHOLM/PARIS—Mercedes-Benz is set to unveil its much-anticipated electric SUV on Sept. 4, marking the start of a German onslaught against Tesla’s dominance of the fast-growing market for premium battery cars.
Daimler-owned Mercedes, BMW and Volkswagen’s Audi and Porsche divisions are all gunning for the $52 billion Californian upstart, with early publicity efforts emulating its tech-industry halo.
