The Duqueine D09 is a third-generation LMP3 prototype developed by Duqueine Engineering for the 2025 ACO LMP3 regulations. It debuted at the 2025 4 Hours of Barcelona in the European Le Mans Series, replacing the earlier Duqueine D08. The car features a carbonfibre monocoque chassis and is powered by a 3.5-litre twin-turbocharged Toyota V35A‑FTS V6 engine producing around 470 bhp, paired with a six-speed sequential gearbox and advanced aerodynamic package. Minimum weight is approximately 1000 kg, with Michelin tyres and 18-inch wheels used across the category.
During the 2025 ELMS season the D09 was entered by WTM by Rinaldi Racing, competing against rivals such as CLX Motorsport and Inter Europol Competition. While CLX Motorsport dominated the LMP3 championship, the Duqueine entry achieved competitive midfield finishes and contributed to the debut season of the new-generation LMP3 chassis.
The Circuit de Barcelona-Catalunya is a permanent motorsport circuit located around 30 km northeast of Barcelona. Opened in 1991, the track quickly became one of Europe’s premier racing venues and has hosted the Spanish Grand Prix since its inauguration. The circuit’s modern Grand Prix layout measures 4.657 km and features a combination of fast sweeping corners, technical medium-speed sections and a long 1.047 km main straight, making it a demanding test of aerodynamics, tyre wear and overall car balance.
Over the years the venue has used several configurations, including the original 1991 layout, modifications introduced in 1995, the 2007–2022 chicane configuration, and the revised high-speed final sector introduced in 2023 when the final chicane was removed to restore the classic final corners. In total, the circuit has run four main layout variations for international competition.
The track became part of the European Le Mans Series calendar in 2019, hosting the 4 Hours of Barcelona as the season opener, but first hosted the Le Mans Series in 2008. The overall victory in the 2025 ELMS edition went to AF Corse’s No. 83 Oreca-Gibson, driven by François Perrodo, Alessio Rovera and Matthieu Vaxivière, after a dramatic last-lap overtake on the IDEC Sport car.