Join Date: Dec 2015
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Well, the easy answer is as simple as what nearly every other manufacturer has arrived at. A turbo. My wife's got a 2016 328i, and I drove it for a month while my car was in the body shop. Smaller engine, 500+ extra pounds to drag around, yet it has nearly 50% more power and gets better mileage, all while being laughably faster than my poor car.
I love engineering, but when the easy answer has only upsides and no downsides, why go about it the hard way? The BMW engine revs so much better than mine, and revs 800 rpm higher, while still making power up there. But it makes gobs more torque down low. Yes, there's a tiny bit of lag, but the Mazda has a lazy throttle sensor that isn't any better, and that's always there, not like turbo lag that's only there when you catch the turbo unspooled.
I like the 2.5l, but I chose it in what appears to be a misguided preference for natural aspiration over forced induction. I wanted the revs and quick throttle response of my previous n/a motors, but instead got the low end torque and sometimes lazy throttle response of a turbo mill, but lost the high revs and linear power delivery.
Just for the record, torqueless has a whole new meaning when talking about rotaries. My dad's still got his FD RX7, and when it's here in Dallas, in 100+ heat, with the a/c running, it's a new definition of torqueless. Scary is more apt. Then you get walloped with turbos and you're looking out of the side windows.