The 2013 ADAC GT Masters season was the seventh season of the ADAC GT Masters, the grand tourer-style sports car racing founded by the German automobile club ADAC. It began on 27 April at Motorsport Arena Oschersleben and finished on 29 September at Hockenheim after eight double-header meetings.[1] Diego Alessi and Daniel Keilwitz claimed the championship title.[2]