Diesel prices in California have maxed out digital displays at Bay Area pumps, forcing stations to show $9.999 per gallon.
Patrick De Haan, head of petroleum analysis for GasBuddy, confirmed that three stations in the region hit the numerical ceiling on their price boards by Friday — two in San Jose and one in Santa Clara. One of the affected locations was Rotten Robbie’s near downtown San Jose, he told the California Post. The Bay Area already carries three of the state’s most expensive metro regions for fuel.

The crowdsourcing platform GasBuddy first flagged the phenomenon after users reported multiple stations showing the capped figure. De Haan initially counted five stations at the limit but later revised that downward. The $9.999 display does not necessarily reflect the exact price being charged, but rather the maximum value the electronic tickers can register.
AAA data released Friday put California’s average regular gas price at $5.92 a gallon, with diesel averaging $7.98 statewide. Those figures represent a sharp jump from just one month earlier, when regular gas ran 34 cents cheaper and diesel sat about $1.13 lower.
GasBuddy issued a statement on the record-breaking diesel costs, which the company noted had never before crossed $6 a gallon nationally.
“Not every day are new all-time records set, and this will be a particularly painful one for the economy that may not even be immediately felt, but record diesel prices will impact every cargo, shipment, every delivery Americans are taking, and are likely to reignite inflation up and down the supply chain,” De Haan said.
He continued, “And for now, it comes at a time of year when diesel prices also traditionally rise, adding more pain. I suggest Americans anticipate a costlier holiday season, as it appears diesel prices could continue climbing as geopolitical tensions continue to remain a main factor.”

Social media commenters reacted with a mix of disbelief and dark humor to news of the display failures. “What happens then? I mean this sincerely,” one person wrote. Another posted, “If it hit the limit that means prices can’t go any higher right? Right…” A third commenter warned, “Nearly $10 a gallon for diesel is absolutely brutal. Trucking, transportation, and everyday consumers will feel this.”

The diesel surge arrives as global oil markets face pressure from escalating conflict in the Middle East, with crude prices climbing in response to tensions between Israel and Iran. Transportation costs represent a pass-through expense for virtually all consumer goods, meaning the pump price spike threatens broader economic ripple effects beyond drivers themselves.
California drivers already pay the nation’s highest fuel prices due to a combination of state taxes, environmental regulations requiring cleaner-burning formulations, and limited refinery capacity. The gap between California prices and the national average typically runs well above $1 per gallon even in normal market conditions.


