U.S. diesel prices hit record $6.05 per gallon in September 2026, up 60% from last year; Iran war and reduced Russian refining capacity driving surge expected to raise consumer costs.

Diesel prices in U.S. top $6 a gallon for first time ever

Updated on: September 11, 2026 / 8:20 AM EDT / CBS News Add CBS News on Google Diesel prices in the U.S. have passed a painful new milestone for the transportation industry: $6 a gallon, a surge experts say is likely to have ripple effects for consumers as businesses pass on their higher energy costs.The national average for a gallon of diesel rose to a record $6.05 on Friday, up more than 60% from $3.71 a year ago, according to data from AAA. Diesel is widely used in trucking and rail, affecti...