Rank 9 centres the Audi R15 TDI plus — the 2010-spec evolution of Ingolstadt's open-cockpit LMP1 weapon that won Le Mans outright with Mike Rockenfeller, Timo Bernhard, and Romain Dumas after a season of aerodynamic refinement over the original 2009 R15. The 5.5-litre V10 TDI architecture — advertised across nose and pods as TDI Power — represented the peak of Audi Sport Team Joest's diesel dominance before the R18 closed-cockpit era. Number 1 livery in silver-white and navy, Shell and Bosch sponsor geometry, and the Vorsprung durch Technik slogan anchor the plate to factory confidence at a circuit where fuel stints and torque curves decided races as surely as outright pace. The circular callout path — eleven corners, diesel innovation, Sarthe 13.626 km — treats the Circuit de la Sarthe as measurable engineering terrain. Churn-collector layout renders the etched illustration hero, pentagonal frame, and TDI annotation ring exactly as the master PNG dictates.