SCCA® Solo classing — unofficial guide
What autocross class is a Mazda MX-5 Miata (NC)?
CSStreetCSTStreet TouringCSPStreet Prepared
A stock 2006–2015 Mazda MX-5 Miata (NC) runs in CS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within CST tire and wheel limits), it runs CST.
From the 2026 rulebook (Appendix A)
Street: 'MX-5 Miata (NC chassis; non-MS-R 2007) (2006-15)' = CS; the 2007 MS-R = BS. ST: 'MX-5 Miata (2006-15)' = CST. SP: 'MX-5 (2006-15)' = CSP; DSP 'MX-5 (2006-2015) Limited Prep' also listed.
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.