Fuel Price Spike Pressures Convenience Store Traffic and In-Store Spending Amid US-Iran Tensions

Elevated gasoline and diesel prices in August 2026, driven by the US-Iran conflict and global refining constraints, contributed to a measurable pullback in convenience store (c-store) foot traffic and inside sales volumes, according to analyst commentary and supporting industry data.

National average regular gasoline prices reached approximately $4.06 per gallon in August, up 29.5% year-over-year, with diesel averaging $5.46 per gallon, a 45.9% increase, per Bureau of Transportation Statistics data. AAA tracking similarly positioned August 2026 as the most expensive such month on record, with daily averages exceeding $4 per gallon for the first time and diesel near $5.40. These levels reflected disruptions including volatility in the Strait of Hormuz.[1][2]

Jefferies food analyst Scott Marks highlighted in a recent note that c-store visits declined 2% year-over-year in August, reversing a 1.25 percentage point sequential improvement from July. The three months ended August 22 saw tracked food category volumes fall roughly 9%, worsening from a 7.5% decline over the prior six months, while dollar sales dropped about 3% despite 6% pricing growth. Nielsen data indicated broad softening across most top food categories, with volumes deteriorating in items like multi-serve, ice cream, meat snacks, and confectionery. Performance nutrition shakes stood out with strong double-digit sales and volume growth, reflecting protein demand, while chocolate turned negative.[3]

Casey's General Stores (CASY) first-quarter results for the period ended July 31, 2026, showed inside same-store sales up 3.2%, supported by traffic and units across income cohorts, though lower-income shoppers faced more pressure and fuel gallons per trip declined amid higher prices. The company noted trade-down to private label and strength in nicotine alternatives and energy drinks. Shares fell post-earnings amid elevated expectations rather than fundamental weakness.[4]

Broader context aligns with these trends. Placer.ai data linked high gas prices above $4 to slower retail store traffic, with consumers cutting visits and non-discretionary spending. Grocery transaction analysis showed every 1% gas price increase correlating with roughly 0.5% drops in visits and revenue. C-store executives from chains including Arko and CrossAmerica Partners reported similar pressures on impulse items and fuel volumes during Q2 amid historic-low consumer sentiment and fuel costs exceeding $4.60 earlier in the year.[5][6]

The pattern illustrates classic consumer trade-down behavior during energy-driven squeezes: fewer discretionary stops, smaller baskets, and selective strength in value or essential categories like protein shakes, while higher-priced or indulgent items lag.