How This Calculator Works

  • Enter your fleet size and current average monthly fuel, maintenance, and admin cost per vehicle.
  • Enter the efficiency gains you expect in each category — start with conservative estimates.
  • Enter the monthly software cost per vehicle you're evaluating.
  • The calculator nets the projected savings against the software cost to show your real monthly and annual benefit.

How ROI Is Calculated

Net Annual Benefit = (Annual Gross Savings) − (Annual Software Cost)

Gross savings come from applying your expected efficiency gains to your current fuel, maintenance, and admin spend across the whole fleet.

📌 Want This Calculated Automatically, Per Vehicle?

FleetFabric©, paired with BulkDataPro©, captures the underlying fuel, maintenance, and usage data behind this calculator automatically — no manual entry required. Request a demo to see it running against your own fleet.

Frequently Asked Questions

What's a realistic fuel efficiency gain to expect?

Fleets typically see fuel efficiency gains of 8–15% from route optimisation, driver behaviour monitoring, and fuel theft detection after adopting fleet software. Start conservatively and adjust based on your own results.

Does this include implementation or setup costs?

No — this calculator estimates ongoing monthly and annual ROI from operating cost savings. Ask your vendor for implementation and onboarding costs separately to build a full first-year picture.

Why is my ROI negative?

A negative net monthly saving usually means your expected efficiency gains are too low relative to the software cost, or your current cost inputs are lower than typical. Try adjusting the percentage fields to reflect your fleet's specific situation.

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Read more: Fleet Profitability Reporting Explained →

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