PARIS, Sept 28 (Reuters) - Volkswagen's premium unit Audi AG raised its vehicle sales forecast for 2006 by 10,000 units thanks to strong demand for new models such as the Q7 offroader, the company said on Thursday. Sales should rise by 7.1-7.2 percent to 890,000 units this year, Audi's head of sales and marketing, Ralph Weyler, told reporters at the Paris car show.