The U.S. Environmental Protection Agency issued an emergency fuel waiver to allow the sale of E15, gasoline blended with 15% ethanol, nationwide during the summer season.

Automakers in China are fighting not to be edged aside in the world’s largest car market while watching for U.S. President Donald Trump’s next steps in his trade war.

The national average diesel price dropped 2 cents a gallon to $3.514, according to U.S. Energy Information Administration data.

The national average diesel price dropped 4.5 cents a gallon to $3.534, according to U.S. Energy Information Administration data released.

After three consecutive increases, the national average diesel price dropped 6 cents a gallon to $3.579, according to U.S. Energy Information Administration data.

This is the time of year when many parents are thinking about buying a used vehicle for their teen drivers. The vehicle may be a graduation gift or a needed set of wheels for a summer job or trip to college.

The third straight increase and more than the previous two combined, the national average price for a gallon of diesel jumped 4.7 cents to $3.639, according to U.S. Energy Information Administration data.

The second straight weekly increase, the national average diesel price climbed 2.5 cents to $3.592 a gallon, according to U.S. Energy Information Administration data.

The major car companies say sales rose sharply in March, with most reporting double-digit gains. For some companies, the strong performance last month helped make up for a sluggish start to the year.