Subaru Efficiency-B STI Idea unveiled: Impreza WRX STI reborn!
Subaru has unveiled a brand new idea automotive on the Japan Mobility Present 2025. It’s referred to as the Efficiency-B STI, and it reminds us of the rally-inspired Impreza WRX STI, which was discontinued in 2021.
The Efficiency-B STI idea relies on the second-gen WRX. It’s a high-performance hatchback that includes typical STI upgrades. The sporty physique equipment features a entrance splitter, prolonged aspect skirts and a diffuser. It additionally comes with a vented bonnet, broad fenders and a large rear spoiler.

The Efficiency-B STI idea is completed in Subaru’s signature blue exterior color with crimson accents. Want they’d given it gold wheels as an alternative of those gray ones.
Subaru hasn’t revealed what’s underneath the bonnet, although. It’s more than likely a turbocharged 2.5-liter 4-cylinder boxer engine.
Subaru additionally unveiled the Efficiency-E STI Idea. It’s a completely electrical efficiency automotive.