The national average price for a gallon of on-highway diesel fell 3.5 cents in the week ended Oct. 13 to $3.698, according to the Department of Energy’s Energy Information Administration.
That’s the largest week-to-week drop since the week ended April 29, 2013, when diesel fell 3.6 cents, according to DOE data.
The country’s average price is also the lowest it has been since mid-July 2012. It’s also 18.8 cents lower than the same week last year.
All regions in the U.S. also saw price drops.
The West Coast less California region led all price decreases with a 5.3-cent drop, followed by the Central Atlantic’s 4.6-cent decline, the West Coast’s 4.2-cent drop, the East Coast’s 4.1-cent drop and the Lower Atlantic’s 4-cent drop.
All regions now have averages lower than $4.
The nation’s most expensive diesel is still in California, $3.998, followed by the West Coast’s (including California) $3.891 and New England’s $3.815.
The Midwest overtook the Gulf Coast for the country’s cheapest diesel, $3.636, followed by the Gulf Coast’s $3.637 and the Lower Atlantic’s $3.638.