AAA Mid-Atlantic said the average price of a gallon of regular gas in New Jersey on Friday was $3.20, unchanged from a week ago. Drivers were paying an average of $2.21 a gallon a year ago at this time. Photo illustration by Kelly K from FreeImages. New Jersey. State gas tax to fall 8.3 cents a gallon on Oct. 1 New Jersey’s gas tax will go down by 8.3 cents a gallon, or about 16%. on Oct. 1, Gov. Phil Murphy’s administration announced... Local News 25 Aug 2021 | 07:13