Commercial Vehicle, Bus & Coach Manufacturing worked example

Warranty Accrual at 110% warranty coverage share: a worked example

What does the result look like when warranty coverage share reaches 110%? The full calculation is worked below with real intermediate numbers. estimating warranty accrual rate for vehicle shipments

The inputs for this scenario

  • Vehicles shipped or under warranty: 180 units (unchanged)
  • Warranty accrual period: 12 hr (unchanged)
  • Warranty coverage share: 110 % (raised for this scenario; the documented default is 100)

Working through the calculation

  • Applying the documented formula (Gross warranty accrual = vehicles shipped or under warranty ÷ warranty accrual period) to the inputs above produces each figure below.
  • At this operating point the engine returns 16.5 vehicles / hr for effective throughput, the number this scenario is built around.
  • At this operating point the engine returns 15 vehicles / hr for raw throughput.
  • At this operating point the engine returns 110 % for efficiency.
  • At this operating point the engine returns 12 hr for warranty accrual period.

How this compares with the baseline

  • Against the tool's baseline example, where warranty coverage share sits at 100% and the headline result is 15 vehicles / hr, this scenario comes in 10% above the baseline at 16.5 vehicles / hr.
  • A figure at this level is achievable when warranty coverage share is genuinely sustained, not just peaked for a shift. It is a unit-flow rate, not a dollar liability — it does not know per-vehicle claim cost or failure curves, so it must feed a cost model to become an accrual figure.

Results at a glance

  • Effective throughput: 16.5 vehicles / hr (headline result)
  • Raw throughput: 15 vehicles / hr
  • Efficiency: 110 %
  • warranty accrual period: 12 hr

Run it with your numbers

  • Every input above is editable in the live Warranty Accrual calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.