From the ole liberal standby Snopes:
"In March 2012, the same month the second image was photographed, The Washington Post
reported: “According to AAA’s national survey of gas prices, a gallon of regular-grade fuel is averaging $4.15 in the District. The average price was about $3.85 a gallon a month ago.” The Washington Post also wrote: “The District is topped by only four states where gas averages more than $4 a gallon. Its prices are surpassed by those in Illinois, Alaska, California and Hawaii, where the average is $4.54 a gallon.”
However,
according to the U.S. Energy Information Administration, the national gas price average over the eight years that Obama and Biden were in office was $2.96 per gallon for regular, unleaded gasoline. By comparison, the same data showed that the previous eight years under President George W. Bush saw an average of $2.13 per gallon. Under Trump’s first term through October 2020, the comparative price was $2.53."
Viral images of Exxon gas station signs were shared in October 2020, ahead of Election Day.
www.snopes.com
PS: Note again, they fact-checked a claim that wasn't made.