https://www.mercurynews.com/2019/10/03/editorial-california-ag-should-investigate-unexplained-gas-surcharge/ > With California gas prices rising, it’s time for state officials to solve the mystery of an unexplained gas surcharge motorists have been paying for at least four years. > Industry experts are blaming the recent price hike on refinery production challenges in the state and the Sept. 14 attack on a major Saudi oil facility. But that’s on top of an estimated 20-30 cents a gallon price bump Californians have been paying since 2015 that cannot be explained by the state’s taxes and special fuel blends to fight pollution and climate change.