Audi RS3 Forum is an online community dedicated to the Audi RS3 and the people who own, maintain, modify, or simply enjoy the model. Operated by the RS3 Club International e. V., the forum brings together members to exchange practical knowledge, discuss their cars, and connect with fellow enthusiasts.

Its sections cover multiple RS3 generations, including the 8V and 8Y, with dedicated discussions for Sportback and limousine models. Members can explore technical knowledge bases, ask questions about maintenance and servicing, and share information on engines, exhaust systems, transmissions, suspension, wheels, brakes, electronics, and multimedia. Tuning areas address performance upgrades, modifications, projects, and approval or inspection topics.

The forum also hosts discussions about faults and troubleshooting, measurement results, other vehicles, and general conversation, alongside introductions, photographs, and videos. An English-language section welcomes participants who do not speak German fluently. Rather than selling cars or automotive products, the forum provides a member-driven resource for information, peer support, and discussion related to the RS3