- Subaru might be working on a new sports car with an STI version.
- Recent ACX and ACX STI trademark filings point to an EV.
- A combustion sports car could be based on the Toyota GR Celica.
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.
The Trademarks
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.
More: Subaru Can’t Sell You A Proper WRX STI, But It’ll Race One Against Cars With Nearly Double Its Power
The ACX, VPX, and ZPX names have already been trademarked in the US, Canada, and the UK alongside their respective STI variants. Each of those filings carries a specific description: “Automobiles and structural parts therefore electric cars.” That wording leaves little to the imagination.
Illustrations: Theottle
Of the three new names, only VPX has been paired with a Wilderness designation, which points toward something taller and more utilitarian, whether a truck, a crossover, or an SUV. ACX and ZPX arrive without that context, leaving only earlier rumors and reports to go on. One plausible home for either name is the long-rumored successor to the BRZ.
Independent digital artist Theophilus Chin has imagined that successor as a fully electric sports car, pulling design language from the Performance-E STI Concept into a modernized two-door silhouette that still reads as a BRZ.
What About ICE?
Illustrations Theottle
The ACX paperwork tilts heavily toward a zero-emission powertrain, but the ongoing Subaru-Toyota partnership leaves room for a combustion sports car to exist alongside it.
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Subaru recently launched a widebody BRZ-based rally car running a turbocharged engine and all-wheel drive, built to compete in the JRC. Toyota, meanwhile, is testing a still-unidentified WRC contender with a two-door coupe profile, widely believed to be the competition version of the upcoming GR Celica.
Subaru Boxer Rally Spec.Z
The two rally cars share nothing mechanically, but there is still a path for Subaru to field a sibling to the production Toyota GR Celica when that car arrives. Whether Toyota commits to a front-engined or mid-engined layout for the road car is still unresolved.
More: Subaru Says STI Is “Not Dead”, But Its Boxer May Be
Toyota has confirmed a next-generation GR 86 is coming, but the Subaru side of that partnership may diverge, with the next BRZ potentially going fully electric and adopting the elevated stance previewed by the Sport Mobility Concept.
