WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Mazda Mazdaspeed6?

DSStreetGSTStreet Touring

A stock 2006–2007 Mazda Mazdaspeed6 runs in DS (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: 'Mazdaspeed6' = DS (years approximate; listing has none). ST: 'Mazdaspeed6' = 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.