Subaru Keeps Trademarking ACX And ACX STI Names As Performance Coupe Rumors Swirl

The rumor mill around Subaru’s performance division has been working overtime lately. Fans of Subaru Tecnica International have spent months chasing reports of a returning WRX STI hot hatch, but the company may also be working on a new sports coupe with a proper STI variant attached.

 

According to CarSales, Subaru has trademarked the ACX and ACX STI nameplates with IP Australia, a callback to the ACX-II concept car from 1985. The Australian outlet leans toward a gasoline-powered application, pointing to separate “Flat Shift” and “Rev Sync” filings as supporting evidence. However, trademarks lodged elsewhere in the world tell a different story.