Mazda is working on a new rotary engine for the RX-7 descendant that can run on either petrol or diesel, and offer improved fuel economy compared to the recently terminated RX-8 coupe.
The two-stroke 16X engine is designed to correct the shortcomings of Mazda’s most recent rotary engine, including its high oil consumption and lack of torque in the mid-range. Sources in Japan say the new unit has achieved considerable improvements in fuel efficiency.
But the final go-ahead has not yet been received from Mazda’s top executives. Mazda is still working out how to attain the best mixture of performance, economy and emissions. In its current situation, the 16X is expected to give the RX-7 about 300bhp and enable it to reach 60mph in less than 5 seconds.