SCCA® Solo classing — unofficial guide
What autocross class is a Audi TT quattro (Mk2/Mk3)?
DSStreetGSTStreet Touring
A stock 2008–2020 Audi TT quattro (Mk2/Mk3) runs in DS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within GST tire and wheel limits), it runs GST.
Class by preparation level
| Stock (Street) | DS |
| Street Touring | GST |
| Street Prepared | — |
| Street Modified | SM |
| Prepared | — |
A “—” means the car isn’t listed at that level; a build lands in the least-prepared category its modifications allow.
Also eligible for
XA/XBXtreme Street
From the 2026 rulebook (Appendix A)
Street: 'TT quattro (AWD) (2008-20)' = DS. ST: 'TT quattro (AWD)' = GST. TT RS = SST.
Other DS cars
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. Spot an error? Report it on GitHub.