FuelPeg

What would fuel-saving upgrades save your fleet?

Pick the upgrades, check the assumptions, and see fuel saved, payback and 3-year savings. Every number is editable.

Your fleet

Country

Source: American Transportation Research Institute, Analysis of the Operational Costs of Trucking (2025 data): 85,991 miles per truck

Source: U.S. DOE Vehicle Technologies Office / Argonne National Laboratory, "Long-Haul Truck Idling Burns Up Profits" (Aug 2015). "Typically, a long-haul truck idles about 1,800 hours per year."

mpg
$USD/gal

This week’s published price (Sep 28, 2026). Change it to what you pay.

Upgrades

Source: U.S. DOE Vehicle Technologies Office / Argonne National Laboratory, "Long-Haul Truck Idling Burns Up Profits" (Aug 2015). "Idling a heavy-duty truck consumes about 0.8 gallon of fuel per hour." (table range 0.6–1.5)

$USD

Use your quote. Typical installed cost is $8,000–12,000 USD (U.S. DOE, 2015). This is not a quote.

%

Source: U.S. EPA SmartWay aerodynamics verification letters: verified trailer skirts are rated 4% or 5% fuel savings. Lower of the two common verified levels. Verified at long-haul highway speeds; regional or urban routes will save less.

$USD

Use your quote to see payback. We don’t show prices for this.

%

Source: North American Council for Freight Efficiency (NACFE), Tire Pressure Systems Confidence Report, Executive Summary (2020). Running all tires 10 psi under-inflated raises fuel use 0.5%–1.0%. Low end used.

$USD

Use your quote to see payback. We don’t show prices for this.

Your estimate

Saved per year

$9,527

Fuel saved (gal/yr)

1,493

3-year net savings

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Payback: Add a cost

Fuel saved (gal/yr)Saved per yearPayback3-year net savings
Auxiliary power unit (APU)900$5,744Add a cost—
Trailer side skirts529$3,378Add a cost—
Tire pressure monitoring or auto-inflation66$422Add a cost—
All selected upgrades1,493$9,527Add a cost—

Skirt and tire savings overlap a little, so the total is slightly less than the sum. Diesel at $6.382 USD/gal. Estimates for planning only. Real savings depend on routes, speeds, weather, and driver habits.

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