Volkswagen has previously placed the blame on rogue elements inside the company for the emissions scandal. IN early November, two months after more than 11 million Volkswagen vehicles were found to be using software that deliberately under reported nitrous oxide emissions, the German car maker said that it had discovered that another 800 000 of its cars understated their carbon dioxide output and fuel efficiency. Volkswagen maintained that it only found out about the discrepancy in the wake of the wider diesel emissions scandal, but German newspaper Bild am Sonntag this weekend countered that assertion, reporting that Volkswagen executives knew about the false claims a full year ago. The publication says that Martin Winterkorn, then Volkswagen’s…