Mazda's rotary engine could be a perfect fit for modern hybrids thanks to its inherent smoothness
was powered by a 12kWh lithium ion battery pack supported by a 254cc rotary engine that operated at a steady 5000rpm driving a 15kW generator when needed and fitted perfectly into the existing spare wheel well.
It was a simply beautiful little thing to drive, the engine was almost completely silent and, starting fully charged, the car could travel almost 150 miles on 12 litres of petrol . All of which bodes well for’s R-EV with its 8C, 830cc single-disc rotary engine doing much the same as the A1’s smaller unit but from the front, not the rear, of the car.
The engine is fairly small still, with a 120mm rotor radius and an overall width of 840mm. Range from the 17.8kWh battery is 53 miles and electric drive power is 168bhp, with 192lb ft of torque. Mazda’s rotary engines have been criticised in the past for lacklustre torque, heavier fuel consumption and greater challenges in controlling emissions.
The 8C is direct fuel injected for the first time, has a higher compression ratio of 11.9:1 and wider rotor seals and doesn’t have to make the transient response to the driver’s throttle input. Unlike the A1 E-tron, the engine doesn’t quite run at a steady RPM but increases and decreases revs within a 2000-4500rpm operating window. This is to create a more direct correlation between the engine note and the driving experience.
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