Efficiency improvements help elevate estimated range to 360 miles.

Hyundai has previewed a redesigned hydrogen-powered SUV to replace the Tucson FCV.Presented as a concept, the new model appears to be much closer to production form than the futuristic FE Fuel Cell Concept that debuted earlier this year in Geneva.

The yet-to-be-named crossover will be powered by Hyundai's fourth generation of hydrogen fuel cell technology, improving overall system efficiency to 60 percent for an estimated driving range of 360 miles according to Korean test cycles.

Power output has increased by 20 percent compared to the Tucson FCV, providing around 161 horsepower, and drivers can now start the car in temperatures as low as -22 degrees Fahrenheit. Tank design has also evolved to three equally-sized pressure vessels.

The Tucson FCV was among the first FCVs to be mass produced, but sales of all hydrogen-powered vehicles have yet to grow beyond a small niche in California. Reflecting the increasing competitive threat posed by battery-powered EVs, Hyundai recently confirmed that it would shift its focus to pure electric vehicles as its core zero-emissions offerings in the long term.

"Hyundai Motor will also strengthen its global leadership in hydrogen fuel cell technology," the company says. "This will center on enhancing research and development efforts to boost FCEV performance and durability, while also making the technology smaller and cheaper so that it can be applied to smaller sedans."