Volkswagen, the German car maker, has launched a review of its global media agency arrangements from 2017 onwards. The decision could spell the end of a 16-year agency agreement with WPP’s MediaCom, which was first appointed in 1998 by the group, which makes VW, Audi, Seat and Skoda cars. The review comes despite VW re-appointing MediaCom to provide it with strategic media insight and planning and buying services for all of the Volkswagen Group brands, until the end of 2016, just last year.