you havent changed any of the following :
the *air filter
*oil +filter
*gas filter
*spark plugs
*tire pressure
*the normal unlead gas you buy and don't buy fuel aditives to mix with it
* the amount of crap you keep in your car that doesnt need to be there cause your too lazy to move it
I fill my 2001 Kia Rio from empty for only 14.00 and go nearly 300 miles on that. There is definitely something wrong if you don't get wonderful gas mileage.
The 2001 Kia Rio is a gas-powered vehicle.
The gas tank on the 2001 Kia Rio holds 11.9 gal..
Inside the gas tank.
The 2007 Kia Rio is a gas-powered vehicle.
The 2003 Kia Rio is a gas-powered vehicle.
The 2005 Kia Rio is a gas-powered vehicle.
The 2009 Kia Rio is a gas-powered vehicle.
The 2004 Kia Rio is a gas-powered vehicle.
The 2013 Kia Rio is a gas-powered vehicle.
The 2014 Kia Rio is a gas-powered vehicle.
The 2011 Kia Rio is a gas-powered vehicle.
The 2002 Kia Rio is a gas-powered vehicle.