Montana

Rocky Mountain (PADD 4)

$6.445

Diesel /gal · 42nd cheapest

29.75¢

State fuel tax · 26th lowest

22.7%

OOS rate · 42nd lowest

84,929

Inspections (24 mo)

Diesel price trend

Rocky Mountain (PADD 4) · 3 years, EIA weekly

Weekly on-highway diesel · 2023-11-13 → 2026-11-02

Fuel

Retail diesel6.445/gal

National avg: 6.445/gal · at or below average

Tax at the pump54.1¢/gal

■ State 29.75¢ ■ Federal 24.4¢ · per gallon

Roadside safety

FMCSA inspections in Montana, last 24 months

Out-of-service rate22.7%

National avg: 17.7% · above average

Violations per inspection0.94

Out-of-service by inspection type

Driver9,040 viol · 61% OOS

Vehicle18,725 viol · 67% OOS

HazMat160 viol · 20% OOS

84,929

Inspections

33rd most

79,809

Violations

18,120

OOS violations

21.3

Viol / 100 insp

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Diesel: U.S. Energy Information Administration (weekly, by region — states inherit their PADD region price). Fuel tax: FHWA Highway Statistics MF-121T. Inspections & out-of-service: FMCSA (last 24 months). Estimates for guidance, not official figures. Not affiliated with FMCSA.