Mercedes-Benz is recalling about 6,000 cars of its new A-class because of a possible flaw in the cover of the passenger-side airbag unit, the German luxury auto maker said Tuesday. \"The airbag expands, but not the way we want it to,\" said the spokesman. The affected models were produced between June and December 2012. The spokesman was not immediately able to give a figure for affected cars sold outside Germany, but said it would be low since the affected models only hit the market last September. The car owners had already been contacted, said the spokesman, adding that the inspection would take 15 minutes and a possible free repair about three and a half hours. The online version of \"auto motor und sport\" magazine, which first reported the recall, said the affected models were the A180 CDI, A200 CDI, A220 CDI, A180, A200 and A250.