Skip to content
US diesel $4.049 per gallonWeek ending Aug 17, 2026 · EIA
SemiTrucks.org
← All tractors

Peterbilt 389

Peterbilt2007 to 2025Classic and long-nose

The other icon, and like the W900 now out of production. A 389 in good order with a clean specification is closer to an appreciating asset than any other truck in this list.

Fuel economy

5.2-6.5 mpg

loaded, at highway speed

Fuel per mile

$0.692

at $4.049 a gallon

Tractor weight

18,500-21,000

pounds, day cab to large sleeper

Used asking

$45k-$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.

$24,517 a year

Known issues

Age on the older ones, and the aerodynamic penalty every day it works.

Verdict

The most defensible of the classics on resale, and the least defensible on fuel. If you are going to run one, run it on lanes short enough that the fuel gap does not compound.

Others in classic and long-nose