sometime in the ealy 1970's. around 1971 or 72 it went from 25c per gal. to 26c per gal.
In the US it was about .25 cents.
A gallon of gas was 10 cents in 1908. The Ford Model T actually went 25 miles on one gallon of gasoline.
The cost of a gallon of regular gas in 1990 was 1. 16. A first-class stamp was 25-cents and a gallon of milk cost $2. 78. A dozen eggs was one-dollar.
Here in California it was .25 cents a gallon. I remember my friend had a VW and we would help her with gas by giving her our change from going to lunch at A and W.
The US average in 1970 was 35 cents per gallon. That would be about $2.12 per gallon in today's dollars (2014).
It was about 25 cents per gallon
25 cents per gallon
That was just about when it jumped from 25 cents to 50 cents a gallon.
The average price for a gallon of regular gasoline in 1979 was: $.90 cents.
In 1991, the US national average price of a gallon of regular gasoline was $1.23 - equivalent to about $1.97 per gallon in 2010.
IF you meant 25 cents per litre - it would be cheaper to buy it at 85 cents per gallon. At 25c/litre it would cost approx $1.125 per gallon
I recall it as between 25 cents and 30 cents a gallon.