We have done comparisons of Audi sport models, such as the Audi S3 vs S4, but this is our first one to include the RS models. For those readers that aren't sure what the difference is between the RS and S models for Audi, we'll quickly explain. Put simply, RS stands for RennSport, which is translated to "racing sport" in German. Therefore, RS is the top-tier trim level when it … [Read more...] about Audi RS3 vs Audi S3: Performance, Tuning, and Reliability