Since the discontinuation of the RX-8, the iconic Wankel rotary engine has remained silent. Despite its drawbacks in fuel efficiency, reliability, and oil consumption, enthusiasts have clamored for its return. Finally, at the 2023 Brussels Motor Show, Mazda is set to reintroduce the rotary engine, albeit in a new role as an EV range extender for the MX-30.
The Mazda MX-30 is known for its limited range, estimated at only 100 miles by the EPA. Therefore, the need for a range extender is evident, albeit somewhat outdated. The concept of a new electric vehicle equipped with a gasoline range extender is rare, following in the footsteps of the now-discontinued BMW i3. However, the MX-30 stands to benefit from any additional support it can gather.
Mazda
The decision to employ a rotary engine as a gasoline range extender is intriguing given its historical inefficiencies. However, its unique design, devoid of a traditional rotating assembly, may offer a lightweight and space-efficient solution for integration into the vehicle. Mazda seems to be enhancing the traditional Wankel design by incorporating dual intake ports (VVT) to address low-power demand scenarios.
The specific functioning of this setup remains unclear. Comparisons to BMW’s i3 REx, which activated its range extender only at low battery levels as a backup, suggest a potential emergency role for the rotary engine. However, Mazda’s description of the electric motor/rotary engine configuration in the MX-30 as a “unique plug-in hybrid powertrain” raises questions about its regular engagement. Will it contribute power to the rear wheels while the electric motor handles the front axle, or will it mimic the i3’s emergency function?
All inquiries will be resolved upon the MX-30’s official unveiling in Brussels shortly. Regardless of the mechanism, enthusiasts are likely to embrace the return of the rotary engine.
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