SCCA® Solo classing — unofficial guide
What autocross class is a Fiat & Bertone X1/9?
ESStreetDPPrepared
A stock 1974–1987 Fiat & Bertone X1/9 runs in ES (Street) under the 2026 SCCA Solo Rules.
Class by preparation level
| Stock (Street) | ES |
| Street Touring | — |
| Street Prepared | — |
| Street Modified | — |
| Prepared | DP |
A “—” means the car isn’t listed at that level; a build lands in the least-prepared category its modifications allow.
Also eligible for
XPX Prepared (open)
From the 2026 rulebook (Appendix A)
Street: 'X1/9' = ES (years approximate; listing has none). No ST listing found. P: 'X1/9' = DP.
Other ES cars
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. Spot an error? Report it on GitHub.