BERLIN — Volkswagen's commercial vehicles division says 1.8 million of its vehicles are among those affected by the emissions-rigging scandal. Volkswagen AG has admitted using a piece of engine software to cheat on diesel car emissions tests in the U.S. It said last week the engines concerned are in some 11 million vehicles worldwide, far more than the 482,000 originally identified by U.S. authorities. Details have emerged gradually of how many were made by which VW division. On Tuesday, Guenther Scherelis, a spokesman for the commercial vehicles unit — which makes vans and pickups — confirmed a report in the daily Hannoversche Allgemeine Zeitung that 1.8 million of its vehicles were affected. He didn't give further details. Also affected are 5 million VW brand cars, 2.1 million Audis and 1.2 million Skodas.