US retail diesel averaged above $6.00/gal nationally on Thursday for the first time, GasBuddy data show, as US–Iran tensions and Ukrainian strikes on Russian refineries tightened supplies. Diesel, a key input for trucking, rail, shipping and agricult

2026-09-11

US retail diesel averaged above $6.00/gal nationally on Thursday for the first time, GasBuddy data show, as US–Iran tensions and Ukrainian strikes on Russian refineries tightened supplies. Diesel, a key input for trucking, rail, shipping and agriculture, is pushing up logistics and production costs; the national average is about $2.30/gal higher than a year ago. GasBuddy analyst Patrick DeHaan said record diesel prices could reignite inflation across supply chains. Rising fuel costs are a political headache for President Trump and Republicans lawmakers ahead of November midterms.