Review on K&N Engine Air Filter: High Performance, Premium, Washable Replacement | Compatible with 2010-2017 Jeep/Dodge (Compass, Patriot, Caliber) E-1998 by Doug Hammett

I bought this for my 2014 Jeep Patriot after reading reviews of how it improves MPG. I've been tracking my MPG since I bought my Patriot and here are the results so far. Before installation (standard air filter) 1. 19,964 mpg2. 19,598mpg3. 19,877mpg4. 19,298 MPG after installation (with K&N filter)1. 20,678mpg2. 17,775mpg3. 23,630mpg The filter is still relatively new and will update as I fill it. I averaged 19,684mpg with the stock filter and 20,694mpg with the new filter. If this continues, and with a million-kilometer guarantee, this filter will pay for itself. UPDATE 7 May 2014: 4.20.403mpg5. 22,200mpg6. 21,000mpg7. 20,971mpg8. 20,576mpg9. 21.263mpg