Not sure which 2011 Kia Optima 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:
"Installe done week ago. I can't give an educated rating at this time. I expect and hope for a great filter." —Sherrill M from Spotsylvania, VA bought a K&N Air Filters for a 2011 Kia Optima.
"I tried some other automotive websites, but had difficulty navigating them and just logged off. Auto Anything was simple to navigate and purchase at a great price. Time will tell what the fuel mileage advantage will be on my new K&N filter. Thank you. Bryan L. from Massachusetts" —Bryan L from Southampton, MA bought a K&N Air Filters for a 2011 Kia Optima, 2.4L 4-cyl. engine.
"my nascar friend recommended the kn filter and to shut him up I went for it. Knowing nothing about cars etc. and having bought a new car I figured "what the hay". but my mpg read out went up and the engine seems to have more snap. It was easy to replace and only time will tell how the filter maintence will work out. Thanx for the great internet service/ Al Duncan" —Albert D from Melbourne, FL bought a K&N Air Filters for a 2011 Kia Optima.
"I have used K&N's for the last 10 years, it's a great product, easy to maintain, saves you money in the long run." —Steve M from Lanoka Harbor, NJ bought a K&N Air Filters for a 2011 Kia Optima, 3.5L V6.
"My 1st K&N air filter was for my new 2002 Hyundai Sonata with the 2.7 liter V-6 engine. It now has over 127,000 miles on it. No problems with it or my engine. Recently purchased my new 2011 KIA Optima with the 2.4 liter 4-cyl. engine and installed my 2nd K&N air filter in it as well. On a trip to Wisconsin from the Chicago suburbs with only 2,400 miles on the car,using cruise-control @ 65-69 mph and using a/c at times, my mileage was as high as 36.1 mpg, so far. I expect that to rise as the miles increase. The car has an automatic transmission (6-spd.) Installation is a snap. Thank You once again for a proven product." —Lee P from Tinley Park, IL bought a K&N Air Filters for a 2011 Kia Optima, 2.4L 4-cyl. engine.