SCCA® Solo classing — unofficial guide
What autocross class is a BMW M2 CS?
ASStreet
A stock 2020–2021 BMW M2 CS runs in AS (Street) under the 2026 SCCA Solo Rules.
From the 2026 rulebook (Appendix A)
Street: 'M2 CS (2020-2021)' = AS; M2 Performance Edition (ZL9) also AS.
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.