SCCA® Solo classing — unofficial guide
What autocross class is a Ford Mustang EcoBoost?
DSStreetBSTStreet Touring
A stock 2015–2026 Ford Mustang EcoBoost runs in DS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within BST tire and wheel limits), it runs BST.
From the 2026 rulebook (Appendix A)
Street: 'Mustang EcoBoost (2015-26)' = DS. ST: 'Mustang EcoBoost (2015-23)' = BST.
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.