Why Is Diesel Getting More Expensive Compared to Regular Unleaded
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Most automakers have abandoned diesel cars and crossovers for the U.S. market. The reasons are many, including price, and emissions hassles now that VW has been proven to have faked emissions and fuel economy results for generations. However, one other reason why automakers are cautious about introducing new cars and crossovers with diesel engines is the growing gap between diesel and regular unleaded fuel.
Presently, the first business day of 2018, diesel is more expensive than gasoline in every U.S. state. That fact is based on the average prices of both fuels as determined by AAA*. A more important trend is that the price gap between the two fuels is growing.
Last year at this time, the percent difference between diesel and regular unleaded was just 6.4%. That difference still made it a bad deal for cars and crossovers, since modern gasoline engines can match or beat the power and fuel efficiency of modern diesel-equipped cars and crossovers. Today, the gap between these two fuels has more than doubled, with diesel costing 13.4% more than regular unleaded. A year ago, diesel was thirty-six cents per gallon less expensive than it is today. Gas has gone up too, but only by fourteen cents. On average, in the U.S. diesel costs thirty-eight cents per gallon more than gasoline.
Trucks and rigs built for towing will continue to use diesel, but automakers are going to have a very hard time convincing car and crossover buyers that diesel makes any sense at all given its emissions, performance, and price shortcomings.
*Note that the prices used in this story are reflected in the image at the top of page. The AAA source referenced changes over time.