It’s fair to say that Quinn Emanuel Urquhart & Sullivan probably isn’t Volks­wagen AG’s favorite law firm right now.

Quinn Emanuel is already acting for a group of hedge funds in litigation against Volkswagen subsidiary Porsche Automobile Holdings SE. The firm may soon be fighting the world’s leading carmaker by sales on two additional fronts, representing litigants on both sides of the Atlantic following Volkswagen’s admission that it fitted vehicles with engine-management software to cheat emissions tests.