SCCA® Solo classing — unofficial guide
What autocross class is a Saturn ION Redline (Supercharged)?
GSStreetDSTStreet Touring
A stock 2004–2007 Saturn ION Redline (Supercharged) 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: 'ION Redline (Supercharged)' = GS (years approximate; listing has none). ST: 'Ion (2.4L & 2.0L S/C)' = 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.