2010-2017: World Touring Car Championship (WTCC)
In 2010 he completed his first full season with SEAT León TDI in Zengő-Dension Team. He gained his first podium at Okayama in Race 1 after the disqualification of Andy Priaulx and Augusto Farfus. In the last race of the season he won his maiden victory in WTCC at Macau. He finished 9th in the championship with 104 points. He won the Rookie Challenge that year.
In 2011 he switched to a BMW 320 TC with his Zengő-Dension Team. He scored his only podium finish in the season at Hungaroring. In both races he posted the fastest lap. Overall he was 9th again with 88 points. In 2012 he took his first win since the Race of Macau in 2010, and his first win with the BMW. He was victorious in Race 2 of the Race of Hungary, in front of his home crowd.
On 18 November 2012, after the last race (Macau) he won the Yokohama Trophy (Independent Championship) with the Zengő Motorsport team, achieving the most significant victory in the history of Hungarian motor racing.
Zengő Motorsport switched to Honda for 2013, Michelisz stayed with the Hungarian squad until the end of 2015 – he won twice during this time: in 2013, he took victory at Honda's home track, Suzuka Circuit, two years later, he was a winner again at the Hungaroring.
On 13 January 2016, Honda announced Michelisz as factory driver alongside Rob Huff and Tiago Monteiro.[3] The Himesháza-born driver was victorious in Japan for the second time; then he finished fourth in the standings. Next year, he became a championship protagonist, but got defeated by Cyan Racing's Thed Björk in a dramatic final weekend in Qatar.