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Fleet Fuel Efficiency Calculator

Work out fleet fuel efficiency instantly with clear inputs, formula shown and shareable results.

About Fleet Fuel Efficiency Calculator

Fleet consumption is total fuel over total distance, and the gap to a benchmark converts directly into litres: closing 2.5 L/100km across 480,000 km saves 12,000 litres a year. That is why fleet fuel management focuses on the worst-performing vehicles and drivers.

Formula

Fleet consumption

L/100km = total litres / total km x 100; saving = gap x distance / 100

Worked example

With the default values below, Fleet Fuel Efficiency Calculator returns Fleet consumption of 32.50. Change any input above and every figure here is recalculated in your browser.

Inputs used

Fleet distance
480,000 km
Fuel used
156,000 L
Vehicles
18 vehicles
Target consumption
30 L/100km

Results

Fleet consumption
32.50 L/100km
Gap to target
2.50 L/100km
Annual litres if target met
12,000 L
Average distance per vehicle
26,667 km

Step by step

  1. 1Values used
  2. 2Fleet consumption
  3. 3Fleet consumption= 32.50 L/100km
  4. 4Gap to target= 2.50 L/100km
  5. 5Annual litres if target met= 12,000 L
  6. 6Average distance per vehicle= 26,667 km

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Where do the biggest gains come from?

Driver behaviour, typically 5-15% between best and worst on identical routes. Tyre pressure, aerodynamics and route planning follow.

Should I benchmark per vehicle or per tonne-km?

Per tonne-km is fairer when payloads differ, since a fully loaded truck legitimately uses more fuel per kilometre.

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