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The cost of gasoline in Southern California has climbed to its highest level in years about a week before an automatic increase in the state’s gas tax goes into effect.

Pump prices are up across the Southland, with Los Angeles-area drivers paying the most on average to fill up their tanks, about $4.27 for a gallon of a regular unleaded as of Thursday morning. That’s slightly higher than the statewide average of $4.25 and other Southern California counties, according to AAA’s latest weekly report.

In Orange, Riverside, San Bernardino and Ventura counties, the average cost of regular unleaded varied from $4.20 to $4.24 per gallon.

(Auto Club of Southern California)
(Auto Club of Southern California)

“Average gas prices are at levels we haven’t seen since September 2014,” Auto Club spokesman Jeffrey Spring said in a statement.

Prices began to increase throughout the region again after leveling off for a week, and the spike could continue after flaring issues were recently reported by two local refineries, according to Spring.

That “usually translates into production issues,” he said. “We’ll see in the next few days how this might affect retail prices.”

Fuel costs are also currently significantly higher than this time last year, when coronavirus stay-at-home orders kept many drivers off road, driving down demand for gas.

Still, Southern California pump prices are — at least for now — well below the record-setting levels in October 2012, when they ranged from an average of $4.64 to $4.72 per gallon.

But the state’s already highest-in-the-nation gas tax is set to climb again in one week, from 50.5 to 51.1 cents — an increase that is tied to inflation, according to the Los Angeles Times.

The automatic increase is due to Senate Bill 1, a legislative package that was signed into law in 2017 and incrementally raises the fuel excise tax annually to in part help fund road and bridge repairs.

So when can drivers expect some relief from soaring gas costs? Unfortunately for people looking to hit this road this summer, prices likely will remain higher until fall, according to one expert.

“With the economic recovery from Covid continuing, gasoline demand has been very strong. Amidst lower oil production as oil companies struggle to raise output, gas prices have been higher this summer than in the past few years,” Patrick De Haan, the head of petroleum analysis at the fuel pricing website GasBuddy.com, explained in a blog post Wednesday.

That’s true not just for California — where gasoline on average costs the most in the U.S. — but in the rest of the country, too.

“Once market forces begin to balance, I expect prices to moderate this fall and over time, oil production will again rise, helping bring gas prices down to earth as soon as this fall, but the road may remain bumpy until the pandemic is behind us,” De Haan said.