SCCA® Solo classing — unofficial guide
What autocross class is a Audi TTS (Mk3)?
BSStreetSSTStreet Touring
A stock 2016–2020 Audi TTS (Mk3) runs in BS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within SST tire and wheel limits), it runs SST.
From the 2026 rulebook (Appendix A)
Street: 'TTS (2016-20)' = BS. ST: 'TTS (2016-23)' = SST.
Unofficial guidance verified against the 2026 SCCA® Solo® Rules — always confirm against the current rulebook before competing. Classing data cites the exact Appendix A wording it relies on.