[1] Coming from a family with a racing background, Sauter started karting at the age of seven and began to compete in the Swiss Championship in 2013.

He raced in go-karts until the end of 2020, winning the Vega Trofeo in 2014 and 2016 respectively, missing out on the chance of the 2015 title due to a ski accident.

[6] He scored his first point in round three at the Hockenheimring, however a crash in qualifying at the next event at the Sachsenring meant extensive damage to his car, which could only be repaired in time for the second race with the help of other teams' mechanics.

In the final round at Sportsland Sugo, where he competed with Bionic Jack Racing, he even took his first victory in the championship.

[11] After he joined the G Force Driver Development Program in 2024, he returned to the Formula Regional Japanese Championship, driving for Birth Racing Project.