Friday fill-ups just got a little friendlier for Amazon Prime members. Amazon has doubled its Prime fuel discount to 20 cents a gallon on one purchase every Friday at bp, Amoco, ampm and Thorntons stations, and the offer runs through Jan. 29. With pump prices far higher than a year ago, even a dime more off per gallon is worth a look.
How the 20-cent Friday discount works at bp, Amoco, ampm and Thorntons
According to Amazon’s fuel savings announcement, updated Sept. 28, Prime members save a total of 20 cents per gallon on one fuel purchase each Friday at participating locations, double the everyday Prime savings. The Friday deal started Oct. 2 and lasts through Jan. 29.
On every other day, Prime members still save 10 cents a gallon at more than 7,500 bp, Amoco and participating ampm and Thorntons locations. That everyday rate is the part Amazon says can add up to roughly $70 a year for an average driver. The company bases that estimate on 675 gallons a year and 21.5 miles per gallon for light-duty economy cars, using Department of Transportation data, and notes that individual savings vary. Every bit helps when gas prices vary so widely by state. Drivers already hunting for ways to travel cheaply can stack this one onto the list.
The math behind the 20 cents is simple. The bp earnify page for Prime members breaks the everyday savings into a 5-cent earnify discount plus an extra 5 cents for Prime, and the Friday promotion adds another 10 cents on top.
Why the timing matters for drivers
Gas has been one of the biggest drags on household budgets this fall. In its latest Consumer Price Index report, the Bureau of Labor Statistics said the gasoline index rose 34.2 percent over the 12 months ending in September 2026.
The jump was steep in September alone. The BLS release shows gasoline up 9.1 percent for the month on a seasonally adjusted basis, while overall consumer prices rose 3.7 percent from a year earlier. The broader energy index, which includes gasoline, climbed 20.4 percent over the same 12 months. Readers following the bigger picture can see why many Americans feel their paychecks are not going far enough.
A 20-cent discount will not undo a 34 percent increase, but it is real money for anyone who fills up weekly. There are 14 Fridays left in the promotion, starting Oct. 30.
Here is what that looks like in practice. A driver who puts 15 gallons in the tank every Friday would save $3 a week with the doubled discount, or about $42 across the remaining Fridays. That same driver would save $1.50 on the same fill-up on any other day of the week.
How Prime members sign up with earnify
Amazon says activation only has to happen once. Members visit amazon.com/fuelsavings, sign in to Prime and connect a free earnify account with bp. After that, savings apply at the pump by entering the linked phone number, using a linked payment method, or picking the station and pump in the earnify app, which also has a store locator.
Households that share Prime through Amazon Family get a bonus. Amazon says two adults in the same home can each claim the savings, but both need their own earnify account and bp loyalty account, and each must make a separate fuel purchase. For a two-driver household, that can mean two discounted Friday fill-ups instead of one.
According to WKRC Local 12, which calls the promotion “Fuel Up Fridays,” the Friday discount can be used once a week and is capped at 35 gallons per transaction. The everyday discount covers all fuel grades with no minimum purchase. Once the promotion wraps up after Jan. 29, the station also reports, Prime members go back to the standard 10 cents off per gallon year-round.
What to know before the next Friday fill-up
A few details are worth keeping in mind. The bp page notes the offer is available only at participating locations and that restrictions may apply, so a quick check in the station locator before pulling in can save a wasted stop. If a Prime membership ends, the extra Prime savings stop, though the basic earnify discount continues. Members can also unlink the accounts at any time through Amazon or the earnify app, which ends the Prime savings.
Prime savings can also be combined with other eligible earnify rewards and promotions, according to bp. Drivers comparing longer-term costs might also look at used family cars with low maintenance costs, and anyone planning a holiday drive can brush up on the AAA survey on slowing down and moving over.
For a full tank on a Friday, the 35-gallon cap means the most anyone can save on a single fill-up is $7. For a short road trip, these weekend getaway ideas pair nicely with a cheaper Friday tank.
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This article was produced with AI assistance and edited for accuracy against the sources linked above.
Image: Michael Rivera – CC BY-SA 3.0/Wikimedia Commons
