Not sure which 2009 Mazda Miata/MX-5 Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I have been using k&n for several years the first thing i do on a new car is install a k&n. I have been well pleased with the performance and quality." —Michael L from Dupont, IN bought a K&N Air Filters for a 2009 Mazda Miata/MX-5, 2.0L 4-cyl. engine.
"I have a 2009 Mazda MX5 (Miata). I use high end synthetic oil and high octane gas. With the original air filter my MPG would run from the 28s to the low 33s depending on how much highway miles I ran. Now the MPG shows 33.3 or 33.2 for all my miles; city and highway. I can drive whatever I want but the MPG still shows 33.3 or 33.2. I never thought an air filter would alter the MPG in that way." —John R from Davenport, FL bought a K&N Air Filters for a 2009 Mazda Miata/MX-5, 2.0L 4-cyl. engine.