In the 2010/2011 season Gruber only took part in the last World Cup race in Olang , which he finished in seventh position, which meant only 32nd place in the overall World Cup. Before that, he started at the 2011 World Championships in Umhausen , where he finished 13th. In the winter of 2011/2012 Gruber regularly took part in World Cup races again and, in addition to single-seater races, in which two seventh places in Latzfons and Deutschnofen were his best results, he also started in double-seater World Cup races for the first time. Together with Hannes Clara , he placed between sixth and tenth place in the six races of the season, placing him seventh in the overall double-seater World Cup. At the 2012 European Championships in Nowouralsk , Clara / Gruber achieved sixth place in the two-seater and, together with the single-seater Melanie Schwarz and Alex Gruber, fifth place in the team competition, while Stefan Gruber took twelfth place in the single-seater.