following these strong performances, leitch would contend the toyota racing series for the 2014 season - joining brother damon. leitch's most successful season to date would be the 2016 season, where he scored one win, three podiums and third overall in the driver standings. following this, leitch secured a drive in the formula 4 united states championship for 2017. after a strong campaign, leitch returned to new zealand and would contend his fifth consecutive season in the toyota racing series.