WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Toyota GR Corolla?

BSStreetBSTStreet Touring

A stock 2023–2026 Toyota GR Corolla runs in BS (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: 'GR Corolla (excl. MORIZO, excl. Performance Shocks & Springs pkg) (2023-26)' = BS; MORIZO & Perf-pkg cars = AS. ST: 'GR Corolla (2023-2024)' = BST.

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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.