about 25 to 40 km per gallon depends on the car or make
The average price for a gallon of regular gasoline in 1998 was: $1.06
In the US the average price of a gallon of regular unleaded gasoline in 2006 was $2.59
The average price of a gallon of regular unleaded gasoline in 2007 was $2.80
$1.33.5 per gallon average
The average price of a gallon of regular unleaded gasoline in 1980 was $1.25
In 2009, the US national average price of a gallon of regular gasoline was $2.35
The Energy Department estimates the average cost per gallon of gasoline to be $2.84 in 2010.
The US national average retail gasoline price that year was $1.88 per gallon.
In 2004, the US national average price of a gallon of regular gasoline was at its lowest price in January that year - $1.592 per gallon.
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.
In 1994, the US national average price of a gallon of regular gasoline was $1.11 - equivalent to about $1.63 per gallon in 2010.