Gas in the Phoenix area is down 12¢ from last week, now averaging $4.58 a gallon. Filling a 15-gallon tank in the Phoenix area costs about $15 more than a year ago. It is $4.58 a gallon, 99¢ more than a year ago. Filling a 15-gallon tank costs about $15 more. It is $4.58 a gallon, down 12¢ from last week but still 99¢ above a year ago. Prices are AAA's daily averages for regular gas, last updated October 20.

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