Audi continued its dominance with the formidable R8 prototype, securing victories through its privateer teams like Champion Racing after the factory squad stepped back. The R8, known for its bulletproof reliability and speed, remained the benchmark in the LMP900 class, while the RS6 competed in the newly created GT class for sedans under the SCCA's Speed World Challenge. Audi's presence helped solidify ALMS as North America's premier endurance racing series, blending European technical excellence with thrilling American competition.