After a season-long battle with his teammate Kay de Wolf, Coenen finished second in the MX2 class of the 2024 FIM Motocross World Championship.

For the 2021 European Motocross Championship, Coenen made his full time move to the EMX125 class after being signed by BUD Racing Kawasaki.

Coenen was signed by the Nestaan Husqvarna Factory Racing Team for the 2023 FIM Motocross World Championship season in the MX2 class.

Following this, he made his debut at the Motocross des Nations, helping Belgium to fifth overall and picking up the Ricky Carmichael Youngest Rider award individually.

The 2024 FIM Motocross World Championship saw Coenen battle throughout the season with his teammate Kay de Wolf for the title in the MX2 class.

With other riders being drafted into the remaining two spots due to injuries, Coenen was asked to ride in the MX2 class which he initially refused to do, causing the team to briefly withdraw from the event.

[8] Despite still being 17 years old, after the 2024 Motocross des Nations it was announced that Coenen would move up to the MXGP class for the 2025 season for the Red Bull KTM Factory team.