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US diesel $4.049 per gallonWeek ending Aug 17, 2026 · EIA
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Western Star 49X

Western Star2020 to presentVocational and heavy haul

Purpose-built severe service, with Detroit power and a frame rated for work that would fold a linehaul tractor. Heavy haul, logging, oilfield and mining.

Fuel economy

4.6-6.3 mpg

loaded, at highway speed

Fuel per mile

$0.743

at $4.049 a gallon

Tractor weight

19,500-26,000

pounds, day cab to large sleeper

Used asking

$80k-$200k

condition moves this more than the model

What the fuel gap costs

Against the most efficient tractor in this reference, over 120,000 miles at this week’s diesel price.

$30,613 a year

Known issues

Specification-dependent, and parts run through the Daimler network.

Verdict

The correct answer when the work genuinely is severe. An expensive way to pull a dry van.