Mazda has recently provided duel-fuel Rx-8 hydrogen-petrol rotary engine to Japan’s Ministry of Economy, Trade, and Industry to be used for their daily operations. Now, they are continuing with their research on hydrogen-powered engines as they promised during the Tokyo Motor Show in 2005 that they will be developing a hydrogen rotary hybrid version of the Mazda 5.

Under the hood of this Mazda 5 Hydrogen Rotary Hybrid Concept, Mazda has mounted the same duel-fuel, two-rotor hydrogen RENESIS like the one RX-8 Hydrogen has. During the said auto show, it was the first time that this concept had been demonstrated in a front-wheel drive application.

As suggested already, there are two fuel tanks present in the conceptualized Mazda 5 hydrogen rotary hybrid. The first one is a gas tanks that resides beneath the rear seat together with the battery, and the second one is a hydrogen tank in the back, which replaces the third row of seats.

It is this way that Mazda can materialize their concept of a vehicle running on either hydrogen or gasoline (which is already present in the RX-8 hydrogen). Drivers can easily change their power source with just a flick of a switch on the dashboard.

This Mazda 5 hydrogen rotary hybrid concept is even better than the RX-8 in terms of storage space as its hydrogen tank fills up almost the entire small trunk of the RX-8.