Not sure which 2010 Ford Focus Air Filters - Custom Fit is right for you? We have over 12082 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 received the filter on time and I was able to install it with ease. On the 1st tank of gas I had 2MPG improvement. I continue to average 2 to 4 MPG better." —John I from Grasonville, MD bought a K&N Air Filters for a 2010 Ford Focus.
"when i open the box i new this was a good filter and matched the oem filter in very way. noticed little quicker acceleration. mpg were increased by 1.5" —Stuart W from Orlando, FL bought a K&N Air Filters for a 2010 Ford Focus.