If the Obama administration's fuel efficiency standards, which are set for 2025, were enforced today, how much less money would each American driver spend per year on gasoline?

Oil companies say new EPA rules on sulfur levels in gas will increase prices several cents a gallon, but higher refining costs could play out many ways.

The Environmental Protection Agency is expected to propose a new rule today that will require refiners to cut the amount of sulfur in gasoline by two thirds.

The average price of a gallon of regular unleaded gasoline is up to $3.78, according to AAA’s Daily Fuel Gauge Report.

Prices generally increase as refineries start to change from production of winter-season gas to more expensive summer-season gas, lowering production.

Oklahoma not only boasts some of the lowest gas prices in the country, but also one of the highest concentrations of gas stations.

New York and New Jersey will end gas rationing programs that were put place in some areas post-Sandy. As demand continues to outstrip supply, some people are going to extreme measures to find or steal gas.

Gas rationing is back in New York City and parts of Long Island. And — like in the 1970s oil crisis — cars that end in an even number fill up on even days, and odd plates on odd days.

Odd numbered license plates get to buy gas on odd numbered dates; evens on evens.

New York's state attorney general investigates price gouging as Craigslist ads sell gas for $20 a gallon.