How This Calculator Works

  • Enter your fleet size, average annual distance per vehicle, and your service interval in kilometres.
  • Enter your average cost per preventive service.
  • Enter a reactive cost multiplier — 3–4x is a commonly used range for how much more a reactive repair costs versus a scheduled service.
  • The calculator estimates your annual preventive spend and the reactive cost it likely helps you avoid.

Formula

Services per Vehicle / Year = Annual Distance ÷ Service Interval (km)

Estimated reactive-equivalent cost applies a multiplier to your preventive spend, reflecting how much more a breakdown typically costs versus a scheduled service.

📌 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

Where does the reactive cost multiplier come from?

It's a widely used industry rule of thumb — a defect caught and resolved on a scheduled service is typically far cheaper than the same issue causing a breakdown, recovery, and unplanned downtime. Adjust the multiplier if you have your own historical data.

Is this savings figure guaranteed?

No — it's an estimate based on the reactive-vs-preventive cost relationship, not a guarantee. Its value is in showing the order of magnitude of what skipping preventive maintenance can cost.

What if my service interval varies by vehicle type?

Run the calculator separately for each vehicle class with its own typical interval and service cost for a more accurate picture.


Related Fleet Tools

Read more: Preventive Maintenance Compliance — Full KPI Guide →

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