Reviewed By Robert R (Bruceton Mills, WV) Reviewed for a 2004 Hyundai Elantra —7/16/2007 4:30 AM
I am currently installing K&N air filters on my 3rd vehicle. My original was in a 2004 Hyundai Elantra for 85,000 miles. As far as I know, it still is in the car performing fine. The only thing that was done to the filter was cleaning and re-oiling. My gas mileage was increased by 1-3 MPG. I just installed K&N filters in my 2006 Elantra and a 2005 Ford Freestyle. It is too early to evaluate the MPG gain, but I anticipate a 5% to 10% gain in each vehicle. Keep up the good work!!!