The average retail price of gasoline soared by almost 14 cents a gallon last week, rising above $2.50 a gallon for the first time since late October.
The government says motorists paid 13.8 cents more per gallon than the previous week.
The jump in retail prices follows a 42 cent per gallon rise in unleaded gasoline futures since mid-February.
Monday, gasoline for April delivery settled at a $1.83 per gallon.
Average retail prices peaked at $3.07 a gallon in early September, right after Hurricane Katrina.