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US pump prices near 4 year high on Iran war disruption, refinery outages

By Thomson Reuters Apr 28, 2026 | 11:19 AM

By Nicole Jao

NEW YORK, April 28 (Reuters) – The average U.S. gasoline price rose to its highest level in nearly four years, jumping more than ​40% since the U.S. and Israel attacked ‌Iran at the end of February, according to data from the American Automobile Association or AAA.

Prices at the pump were near $4.18 a gallon on Tuesday, up 11 cents a gallon in ‌this ​month and $1.19 a gallon since late ⁠February, AAA data showed.

Gasoline ⁠prices could climb further if crude oil prices continue to surge. Last week, Brent crude futures gained about 16% and U.S. West Texas Intermediate rose ​nearly 13% on growing supply worries as efforts to end the Iran war stalled. Oil prices had ⁠taken a breather earlier this ⁠month on hopes of the Strait of ​Hormuz reopening.

Refinery issues and scheduled maintenance in the Great ​Lakes region is expected to keep prices elevated for ‌consumers in the Midwest, GasBuddy analyst Patrick De Haan said.

BP’s 440,000-barrel-per-day oil refinery in Whiting, Indiana over the weekend experienced a brief power outage that caused ⁠one of its processing units to be shut down.

Phillips 66’s 356,000-barrel-per-day Wood River refinery in Illinois took its crude oil ⁠unit and some ‌other parts of the refinery offline ⁠at the end of February for a ​45-day ‌maintenance period.

Marathon Petroleum’s 253,000-bpd Robinson refinery in ​Illinois also ⁠began planned maintenance in mid-March, with units expected to remain offline until mid-May.

Retailers in the Great Lakes region might raise prices again as early as today, De Haan said.

(Reporting by Nicole Jao in New York; Editing ​by Chizu Nomiyama)