This was supposed to be the year Volkswagen drew a line under its diesel-emissions scandal. Instead the scandal seems to be spreading to the other German car giants.
The latest allegation is that Volkswagen, Porsche and Audi—all owned by the Volkswagen Group—together with Mercedes-maker Daimler and BMW have engaged in collusive practices since the 1990s, including on emissions-reducing technology linked to the VW fraud revealed by the U.S. Environmental Protection Agency in 2015. The European Union’s top antitrust…