SCCA® Solo classing — unofficial guide
What autocross class is a Ford Mustang Shelby GT500?
ASStreet
A stock 2020–2022 Ford Mustang Shelby GT500 runs in AS (Street) under the 2026 SCCA Solo Rules.
Class by preparation level
| Stock (Street) | AS |
| 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: 'Mustang GT500 (excluding GT500KR) (2020-22)' = AS. SP: GT500 (2020-22) = DSP *Limited Prep*.
Other AS 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.