I have been getting about 20mpg city/hwy combined as well at 90K miles with full tune up and K&N Cold Air Intake. Mileage was the same with factory air intake as well.
I've been getting a little over 20 mpg, I installed a K&N air filter and "The Tornado". Stop-n-Go traffic seems to kill mileage because of weight but highway mileage seems okay.
The 2009 Toyota 4Runner is a gas-powered vehicle.
The 2008 Toyota 4Runner is a gas-powered vehicle.
The 2011 Toyota 4Runner is a gas-powered vehicle.
The 2001 Toyota 4Runner is a gas-powered vehicle.
The 2005 Toyota 4Runner is a gas-powered vehicle.
The 2006 Toyota 4Runner is a gas-powered vehicle.
The 2010 Toyota 4Runner is a gas-powered vehicle.
The 2003 Toyota 4Runner is a gas-powered vehicle.
The 2012 Toyota 4Runner is a gas-powered vehicle.
The 2014 Toyota 4Runner is a gas-powered vehicle.
The 2007 Toyota 4Runner is a gas-powered vehicle.
The 2004 Toyota 4Runner is a gas-powered vehicle.