WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Cadillac CT4-V (incl. Blackwing)?

BSStreet

A stock 2020–2026 Cadillac CT4-V (incl. Blackwing) runs in BS (Street) under the 2026 SCCA Solo Rules.

From the 2026 rulebook (Appendix A)

Street: 'CT4V (inc Blackwing) (2020-26)' = BS.

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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.