San Jose Drivers Face Higher Gas Prices

Gas prices are back in the part of the chart Californians hate. On May 12, AAA put the statewide average for regular at $6.153 a gallon, with diesel at $7.447. San Jose tends to run close to the state average, so for South Bay drivers the basic story is simple — filling up costs a lot more than it did last spring. ### How much higher are prices now? The cleanest comparison is the year-over-year one. AAA’s California average for regular was $4.897 a gallon a year ago. Now it is $6.153. That is a jump of about $1.26 a gallon, or roughly 26%. Diesel moved even more dramatically over the same stretch — from $5.003 to $7.447, nearly a $2.44 increase. (gasprices.aaa.com) ### What does that mean for a real driver? Take a pretty normal 15-gallon fill-up. At last year’s statewide regular average, that tank cost about $73.46. At today’s average, it costs about $92.30. That is almost $19 more every time you fill up. If a household fills two cars a few times a month, the extra cost stops feeling abstract very quickly. (gasprices.aaa.com) ### Is this just a San Jose problem? Not really. This is a California problem with local pain layered on top. AAA’s statewide number is already the highest in the country, well above the national average of $4.504 on May 12. So even if San Jose is a little above or below the state figure on a given day, Bay Area drivers are still paying into a market that sits far above most of the U.S. (gasprices.aaa.com) ### Why is California always so exposed? California’s fuel system is unusually boxed in. The state uses a special gasoline blend, has a distinct tax-and-fee structure, and — crucially — does not have incoming gasoline pipelines from the rest of the country. A lot of fuel has to be refined in-state or shipped in by marine vessel. That means when supply gets tight, California cannot just pull in replacement barrels quickly from nearby states. (gasprices.aaa.com) ### Why did prices jump this spring? Two things matter most. First, crude oil moved higher. Second, California’s market reacts sharply when supply looks even a little shaky. The California Energy Commission says pump prices here are heavily driven by global crude costs, but also by refinery disruptions because replacement fuel can take weeks to arrive. In other words — a tight market plus a shock equals a fast move at the pump. (energy.ca.gov) ### Why is diesel even worse? Diesel has its own supply-demand dynamics, and California’s numbers show that clearly. The state hit a record diesel average of $7.747 on April 9, 2026, and even after easing a bit, diesel was still $7.447 on May 12. That matters beyond truckers. Diesel costs bleed into shipping, construction, farm operations, and eventually store prices. (energy.ca.gov) ### Could this cool off soon? It could, but the catch is that California prices do not fall as smoothly as drivers want. If crude retreats and refineries run normally, pump prices usually ease. But California’s isolated system makes it slower to absorb relief and quicker to react to trouble. That asymmetry is basically the whole story. (gasprices.aaa.com) ### What should drivers watch next? Watch crude oil, refinery outages, and the California average itself. EIA’s weekly data for May 11 showed California regular at $5.969, up from $5.648 three weeks earlier, which lines up with the broader spring climb AAA is showing in daily readings. If those benchmarks keep rising, San Jose drivers should expect more pain before relief. (energy.ca.gov) ### Bottom line For San Jose drivers, this is not a weird one-day spike. It is a renewed stretch of expensive fuel in a state that is structurally prone to it. And right now, the numbers are ugly enough that even routine driving feels meaningfully more expensive. (eia.gov)