WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Honda Civic Si (11th gen)?

GSStreetGSTStreet Touring

A stock 2022–2026 Honda Civic Si (11th gen) runs in GS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within GST tire and wheel limits), it runs GST.

From the 2026 rulebook (Appendix A)

Street: 'Civic Si (2022-26)' = GS. ST: 'Civic Si (2017-26)' = GST.

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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.