If you have a Mazda CX-5 and you need to change the engine air filter, it's pretty easy to do. It should take around 5 mins. We bought a generic replacement off Amazon (link below). Save yourself some money and drop one in yourself instead having a mechanic do it for you. This video isn't an endorsement for this particular brand of cabin air filter and is just a video to help you DIY.
We got the filter here on Amazon (there are probably better ones out there):
www.amazon.com/dp/B01LXIJR60
We're not affiliated with the company that made this filter or Amazon so if you click on the link we don't get anything. We paid for this with our own money. This video isn't a product review so the filter we got could be pretty crappy, but better than nothing.