There are show great things you can use. One of them is to use Fuel Infusion. It helps your engine burn fuel more efficiently. Most cars burn their fuel at 93-97% efficiency.
i get about 26 to 27 mpg. mine is a 1999 with 190K.
The 2005 Subaru Impreza is a gas-powered vehicle.
The 2010 Subaru Impreza is a gas-powered vehicle.
The 2014 Subaru Impreza is a gas-powered vehicle.
The 2006 Subaru Impreza is a gas-powered vehicle.
The 2008 Subaru Impreza is a gas-powered vehicle.
The 2004 Subaru Impreza is a gas-powered vehicle.
The 2011 Subaru Impreza is a gas-powered vehicle.
The 2013 Subaru Impreza is a gas-powered vehicle.
The 2007 Subaru Impreza is a gas-powered vehicle.
The 2009 Subaru Impreza is a gas-powered vehicle.
The 2012 Subaru Impreza is a gas-powered vehicle.