The US national average retail gasoline price in 1971 was $0.36 cents per gallon. This equates to about $2.12 per gallon in 2015 dollars.
In 1971, a gallon of gasoline had a average cost of 36 cents. Adjusted for inflation, that would work out to be about $1.98 in 2011
The average price of gasoline in 1983 was 37p in the UK http://www.speedlimit.org.uk/petrolprices.html and the average price of gasoline in 1983 in the USA was $0.81 a gallon.
In 1971, the US national average for a gallon of regular gasoline was 36 cents - the equivalent of about $1.94 per gallon in 2010.
90$
The US national average retail gasoline price that year was $0.31 cents per gallon.
The US national average retail gasoline price that year was $1.88 per gallon.
The average price of a gallon of regular unleaded gasoline in 1980 was $1.25
3.08
.78
The average price of a gallon of regular unleaded gasoline in 1979 was 90 cents.
The average price of a gallon of regular leaded gasoline in 1974 was 53 cents.
The year when the average cost of a barrel of crude oil was $38.00 was 2004. That year, the average price per barrel was $37.66. The average cost for a gallon of regular gasoline in 2004 was: $1.88 per gallon.