SCCA® Solo classing — unofficial guide
What autocross class is a Cadillac CT4 (non-V)?
DSStreet
A stock 2020–2026 Cadillac CT4 (non-V) runs in DS (Street) under the 2026 SCCA Solo Rules.
Class by preparation level
| Stock (Street) | DS |
| Street Touring | — |
| 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
CAM-CClassic American Muscle
From the 2026 rulebook (Appendix A)
Street: 'CT4 (non-V, non-Blackwing (2020-26)' = DS (rulebook has unbalanced paren typo). CT4-V = BS.
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.