Review on K&N Engine Air Filter: High Performance, Premium, Washable Replacement Filter for 2010-2019 Mazda L4 2.0/2.3/2.5L (CX-5, 3, 6, Atenza, Biante, Premacy, Axela) - Model 33-2480 by Richard Gross

I got this for my 2012 Mazda 3 I Grand Touring (yes my car has "rounded" corners for my air intake) and I have to say I love it. My fuel economy improved as did my acceleration. Don't think that this filter will turn your car into some kind of beast or something. Just know that it matters enough when you can say that its quality is top notch and that it actually does what it says on the tin. My MPG has increased as expected (2-4mpg better) and the acceleration seems a bit more responsive than what other filters have to offer. In general, only buy! You will not regret it.