At the 2016 European Championships, Steingruber helped the Swiss team qualify to the team final in third place behind only Great Britain and Russia. She also qualified first to the vault final with an average score of 15.433, eighth to the bars final with a score of 14.033, and second to the floor final with a score of 14.966. In the team final, she contributed an all-around score of 57.657 to help lead the Swiss team to a fourth place finish. In event finals, Steingruber won her third European vault title with an average score of 14.983, just 0.05 ahead of Ellie Downie, becoming the first gymnast in history to win three European championship titles on vault. She then placed sixth in the uneven bars final with a score of 14.166, and won the floor final for her first European title on the event with a massive score of 15.200, finishing 0.634 ahead of Downie, the silver medalist.