Mazda has unveiled a new concept model, the Kai Concept, at the Tokyo Motor Show.

Powered by the next-generation SKYACTIV-X gasoline engine, the front-wheel drive Kai Concept is a sweeping four-door hatchback assumed to be the next-generation Mazda3.

Design-wise, the cars is emblematic of Mazda’s “KODO” design language that introduces minimalist elements to its body, the Kai can be described as aggressively smooth. A low-slung body, mile-long hood, rounded roofline, U-shaped grille piece overlapping headlights, and lack of contoured body lines give it a minimalist retro feel with the same stance as a crouching puma.

On the inside, the interior is remarkably simple with a dial-heavy gauge cluster and head-up display. A thin digital screen is integrated into the dash, stretching nearly two-thirds of its length. Drivers are seated higher than passengers with elevated heating and air conditioning vents to create a more pronounced separation of space between its front occupants.

Arguably, the Kai’s signature feature is its next-generation SKYACTIV-X gas engine set to hit the market in 2019. With development roots dating back to 2011, the Kai uses Mazda’s new diesel-inspired compression technology. In addition to improved throttle response, Mazda promises a 30 percent gain in torque and a 20 percent gain in fuel economy from its current 2.0-liter Skyactiv engine.

Whether an electrified version would eventually be offered wasn’t stated, but Mazda is already the U.S. EPA’s leader in fleet fuel efficiency due to its lack of trucks and frugal gas engines, and the fuel sipper is made with economy in mind while more electrified models are promised to follow in time.