Commercial Vehicle, Bus & Coach Manufacturing worked example

Warranty Accrual at 72% warranty coverage share: a worked example

This worked example runs the warranty accrual numbers for a tougher week than the baseline: 72% warranty coverage share instead of the typical 100%. Estimate warranty accrual exposure per production period for commercial vehicles, buses, or coaches.

The inputs for this scenario

  • Vehicles shipped or under warranty: 180 units (held at the documented default)
  • Warranty accrual period: 12 hr (held at the documented default)
  • Warranty coverage share: 72 % (the input this scenario stresses; the baseline uses 100)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross warranty accrual = vehicles shipped or under warranty รท warranty accrual period.
  • Effective throughput works out to 10.8 vehicles / hr at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 15 vehicles / hr at these inputs.
  • Efficiency works out to 72 % at these inputs.
  • warranty accrual period works out to 12 hr at these inputs.

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 28% below the baseline at 10.8 vehicles / hr.
  • Use it when you want a per-hour or per-shift view of how fast warranty-eligible vehicles are leaving the plant, for reserve pacing and capacity-to-coverage checks. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Effective throughput: 10.8 vehicles / hr (headline result)
  • Raw throughput: 15 vehicles / hr
  • Efficiency: 72 %
  • warranty accrual period: 12 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Warranty Accrual calculator, set warranty coverage share to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.