[Alberta's Child]

One problem nowadays is that diesel fuel taxes are much higher than gasoline taxes in many states. This is one reason why diesel fuel is more expensive than gasoline in most places even though it costs less to refine and produce diesel fuel.

The implication here is that diesel-powered cars will have to be substantially more fuel-efficient than their gasoline-powered counterparts in order to make it worthwhile for motorists to buy them.

[nascarnation]

When the USA mandated ultra low sulfur (15ppm) the refining cost went up quite a bit.

But fear not, the EPA is mandating ultra low sulfur gasoline (10ppm) for 2017 so the price of gasoline will go up equivalently.