A Shamrock gas station at Seventh and Portland streets advertises a gallon of gas for 26.9 cents on July 16, 1971.
Mike Smith/The RepublicThe first gas station in Sun City was at corner of 107th and Grand Avenues near the first model homes in Sun City as seen in this 1960 photo.
Provided By Sun Cities Area Historical SocietyGas prices in Phoenix May 1977.
The RepublicMore than 30 cars wait in line to purchase gasoline at this company-operated Exxon self-service station at Dunlap and Black Canyon Freeway on Dec. 10, 1979. Regular gasoline costs 87.8 cents a gallon, 20 cents a gallon less than prices charged at nearby stations.
Mark Fleming/The RepublicA Whitey's gas station with Lulubelle's restaurant in background in Scottsdale on Oct. 21, 1987.
Beth Duckett/The RepublicTom Dax changes gas prices at Seventh Avenue and Bethany Home Road in Phoenix on Jan. 2, 1991.
The RepublicAllan Bisek drove from Apache Junction to Mesa to buy gas at the AM/PM at Broadway and Alma School roads on March 27, 2000. The unleaded price is $1.439
Mark Henle/The RepublicHarvey Gist, owner of a Texaco Station in Black Canyon City, stands in front of his establishment on Aug. 29, 2001.
Mike Rynearson/The RepublicJustin Javier, from Cave Creek, fills up his car at a Texaco station on Scottsdale Road north of Greenway Road on April 24, 2001.
Mike Rynearson/The RepublicRobert Boone, the store manager at Danny's Family Carousel located at 9960 S. Priest Dive., speaks to a customer while he fills the car's gas tank. Gas was 99 cents a gallon with purchase of a car wash on May 22, 2002.
Emmanuel Lozano/The RepublicMichael Moon, of Mesa, pumps gas at the new Quik Trip gas station on Broadway Road in Mesa on Feb. 04, 2002
Cori Takemoto Williams/The RepublicThe Exxon station in Wickenburg displays a humorous, if realistic view of gas prices on April 24, 2003.
Jack Kurtz/The RepublicBre Riley of Phoenix looks toward the Mobil gas station at 44th and Chandler Boulevard in Phoenix as cars line up for gas on Aug. 18, 2003. Riley had been waiting in line for 2 hours and still did not have gas.
Emmanuel Lozano/The RepublicRichard Ralston looks for an open pump at the gas station at Seventh Street and Indian School Road on Aug. 19, 2003.
Jack Kurtz/The RepublicPeople wait in line at the Chevron station at Seventh and Roosevelt streets in central Phoenix on Aug. 18. 2003. Gas at the Chevron station was $2.19 a gallon for regular unleaded, the only grade of gas the station had for sale.
Jack Kurtz/The RepublicAs a dust storm hits Fountain Hills, a motorist makes a futile search for a place to fill up at the Texaco station on Shea Boulevard on Aug. 18, 2003. The price for unleaded was $2.05 per gallon.
Dave Seibert/The RepublicRegular gas is $1.839 at the Cobblestone Auto Spa and Market in Scottsdale on March 6, 2003.
Mark Henle/The RepublicScott Kirschman is reflected in the window of his Ford F-250 truck as he fills his tank at the Cobblestone Auto Spa and Market in Scottsdale on March 6, 2003.
Mark Henle/The RepublicCourtney Fischrup of Maricopa puts gas in her car at a Circle K station at 50th Street and Chandler Boulevard in Phoenix on May 6, 2004.
Emmanuel Lozano/The RepublicKeith Thornton changes gas prices on a sign at Pasco on the corner of Roosevelt and Seventh streets on Feb. 23, 2004.
Emmanuel Lozano/The RepublicKen Boyd of Sun City fills his truck with gas at a Texaco at Bell Road and 84th Avenue on Aug. 19, 2005.
Emmanuel Lozano/The RepublicBrian Loehr fills the tank of his rental car at an Exxon station at Seventh Street and I-17 before returning it to the airport on March 25, 2005. Loehr, a resident of the United Kingdom, said gas prices are much higher there than in the United States.
John Severson/The RepublicBob Grubbs, of Phoenix,fills up his 2008 Chevrolet truck wat the Star K Gasoline Station at 3202 E. Van Buren St. Gas was priced at $2.999 on Oct. 14, 2008.
Charlie Leight/The RepublicBob Grubbs, of Phoenix,fills up his 2008 Chevrolet truck wat the Star K Gasoline Station at 3202 E. Van Buren St. Gas was priced at $2.999 on Oct. 14, 2008.
Charlie Leight/The RepublicA couple dozen vehicles line up for $1.99 (cash) regular unleaded at the Valero gas station at 20th St. and Osborn in Phoenix, Monday morning, December 15, 2014. Prices are continuing to fall.
Tom Tingle/The Arizona RepublicARCO gas prices at 16th Street and Thomas on Friday, August 30, 2013 in Phoenix, Arizona. Stacie Scott/The Arizona Republic
Stacie Scott/The RepublicGas prices at a gas station in Scottsdale on Friday, April 24, 2015.
Michael Schennum/The RepublicRegular gasoline took a 6-cent jump overnight at the Costco on Elliot Road in Tempe on March 25, 2016.
John Samora/The RepublicGas prices displayed in Phoenix on April 9, 2019.
Mark Henle/The RepublicGas prices on April 15, 2019, in Scottsdale.
Mark Henle/The RepublicGas prices are seen at a Circle K gas station in downtown Phoenix on May 12, 2021.
David Wallace/The RepublicJorge Lopez pumps gas into his work truck at a gas station in Phoenix on May 12, 2021.
David Wallace/The RepublicGuy Lefebvre fills up at the Minute Mart, March 9, 2022, 18183 U.S. 93, Wikieup, Arizona.
Mark Henle/The RepublicA sign shows unleaded gas priced at $5.19 per gallon at a QuikTrip on the corner of 91st and Olive avenues in Peoria on May 19, 2022.
Monica D. Spencer/The RepublicThe price of gasoline at the Circle K on Mill and Southern avenues in Tempe is shown on Aug. 11, 2022. Gas prices in the Valley are starting to dip below $4 a gallon.
Alex Gould/The RepublicQuikTrip on the corner of North 16th Street and Highland Avenue advertises unleaded gas for $5.37 a gallon on June 4, 2022, in Phoenix.
Antranik Tavitian/The RepublicA QuikTrip sign advertises unleaded gasoline for $3.99 per gallon, premium for $4.49 per gallon, and diesel for $3.55 per gallon near 51st Avenue and Interstate 10 in Phoenix on June 16, 2023.
Megan Mendoza/The RepublicAn ARCO along West University Drive sells unleaded gasoline for $3.19 per gallon for debit transactions on Dec. 15, 2023, in Tempe, Ariz.
Megan Mendoza/The RepublicGas prices at an ARCO gas station on Thomas Road and 16th Street in Phoenix on Dec. 8, 2023.
Joel Angel Juarez/The RepublicGas prices at a Quick Run on April 5, 2024, at 2659 W. Guadalupe Road in Mesa.
Mark Henle/The RepublicA Chevron sells regular gasoline for $4.29 per gallon and diesel for $3.69 per gallon on April 5, 2024, in Phoenix.
Megan Mendoza/The RepublicA Circle K sells regular gasoline for $4.19 per gallon for credit card transactions on April 5, 2024, in Phoenix.
Megan Mendoza/The RepublicA Circle K sells regular gasoline for $4.09 per gallon and diesel for $3.89 per gallon when purchased with Easy Pay on April 5, 2024, in Phoenix.
Megan Mendoza/The RepublicA gas pump at the Shell station on the intersection of 52nd Street and Thomas Road in Phoenix where regular unleaded gas is priced at $3.99 a gallon on March 22, 2024.
Joe Rondone/The Republic