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EV & CarsGenerated accuracy model review: 2026-05-06

Tesla Range Loss Calculator accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

  • Estimated range = rated range * product of remaining factors, where each remaining factor is 1 - loss percent / 100.

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

  • Rated Range: 330 mi
  • Battery Degradation: 8%
  • Temperature Loss: 18%
  • Speed/Highway Loss: 10%
  • HVAC/Accessory Loss: 5%
  • Payload/Tire Loss: 0%

Expected outputs

  • Estimated Real-World Range: 212.85 mi
  • Range Lost: 117.15 mi
  • Total Effective Loss: 35.50%
  • Remaining Range Factor: 64.50%

Known limitations

  • This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
  • Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

  • Loss factors are applied multiplicatively rather than simply added.
  • The calculator does not use live vehicle telemetry or route data.
  • Calculations run locally and are for planning only.

Unit handling

  • Rated Range accepts values in mi.
  • Battery Degradation accepts values in %.
  • Temperature Loss accepts values in %.
  • Speed/Highway Loss accepts values in %.
  • HVAC/Accessory Loss accepts values in %.
  • Payload/Tire Loss accepts values in %.
  • Estimated Real-World Range is displayed in mi.
  • Range Lost is displayed in mi.
  • Total Effective Loss is displayed as a percentage.
  • Remaining Range Factor is displayed as a percentage.

Rounding rules

  • Number displays use up to 2 decimal places in the calculator UI.
  • Percent outputs are displayed with two decimal places.
  • Input precision follows configured step values where provided.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current tesla-range-loss-calculator calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for Tesla Range Loss Calculator.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

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