The U.S. average retail price of regular gasoline decreased five cents from the previous week to $2.33 per gallon on September 21, $1.03 per gallon lower than the same time last year. The West Coast and Rocky Mountain prices each fell eight cents to $2.91 per gallon and $2.61 per gallon, respectively. The Gulf Coast price declined seven cents to $2.03 per gallon. The East Coast price decreased five cents to $2.20 per gallon, and the Midwest price was down one cent to $2.27 per gallon.

The U.S. average price for diesel fuel fell three cents from last week to $2.49 per gallon, $1.29 per gallon lower than during the same time last year. The Rocky Mountain and East Coast prices each decreased three cents to $2.52 per gallon and $2.55 per gallon, respectively. The Midwest, Gulf Coast, and West Coast prices all declined two cents to $2.45 per gallon, $2.34 per gallon, and $2.71 per gallon, respectively.