SCCA® Solo classing — unofficial guide
What autocross class is a Honda Civic Si Mugen?
GSStreetDSTStreet Touring
A stock 2008–2008 Honda Civic Si Mugen runs in GS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within DST tire and wheel limits), it runs DST.
Class by preparation level
| Stock (Street) | GS |
| Street Touring | DST |
| Street Prepared | — |
| Street Modified | SMF |
| 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: 'Civic Si Mugen (2008)' = GS (excluded from the HS 'Civic (all)' listing). ST: 'Civic Si (2002-15)' = DST.
Other GS 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.