hey guys u i have mustang 2013 v6 3.7 and i have mpg problem im get 12 mpg in freeway also on city same..... i was changed sparkplugs. air filter . and i was scanned with launch x431 there is no any error code

 

I answered in your other thread Shant. By the way what octane gas are you using, I don't know what they are selling in Syria . A Lower octane than what would be 87 octane in the American stations could possibly give lower MPG also. Seeing the Car I am thinking it has Cloth interior so I do not think it has the instant MPG display.