Manthey successfully defends the FIA Endurance Trophy for LMGT3 teams and drivers with Ryan Hardwick (USA), Riccardo Pera (Italy), and Richard Lietz (Austria) in the Manthey 1st Phorm Porsche.

After the double championship victory in the series debut in the 2024/25 Asian Le Mans Series (ALMS), Manthey is continuing its involvement in the 2025/26 season and will once again field two Porsche 911 GT3 R in the endurance races across Asia.

Manthey is set to expand its GT3 racing programme to the North American IMSA WeatherTech SportsCar Championship for the first time in 2026. The team based close to the Nürburgring will enter one Porsche 911 GT3 R in both the GTD and GTD PRO classes of the five IMSA Michelin Endurance Cup races. 

Manthey wins the team and drivers' championship as well as the "Rookie of the Year" title in the 2025 DTM season with drivers Ayhancan Güven, Thomas Preining and Morris Schuring.  

After cars 85 and 92 had temporarily formed the double lead of the LMGT3 field thanks to strong stints, the Six Hours of Fuji ultimately saw the Iron Dames and Manthey 1st Phorm finish in 13th and 5th place, due to a strategically disadvantageous safety car phase during the final third of the race.