Having been bought a kart by his father after completing the challenge of beating the laptime record at his local track by over a second, Kluss started competing in regional competitions at the age of six.

[7][8][9] Kluss also took part in European series from 2019 onwards, managing to finish third in the Rotax Euro Trophy, as well as competing in the 2021 Karting World Championship with RS Competition.

More points would follow at the Nürburgring, before Kluss took his first ever podium in single-seaters during a rain-affected Race 3 at the Lausitzring, beating Rasmus Joutsimies by three thousandths of a second across the finish line.

[14] Kluss was nominated by the German Motor Sport Federation as their Formula 4 representative for the FIA Motorsport Games held at the end of the year.

[23][24] After that, he scored in every race till the end of the season, meaning that Kluss finished sixth in the standings with 121 points, securing three podiums.