Evidence, not diagnosis

Long-term patterns without false certainty.

Tessa shows how each estimate was formed and withholds conclusions until enough evidence exists.

Tessa usable-capacity estimate

69.7kWh
estimated90% confidence

Tessa estimates usable capacity from qualified energy and state-of-charge changes. Temperature and charging losses can move this trend.

9 qualified energy/SOC changes
Estimated retention93%
Reference baseline75 kWh

Not an official Tesla battery-health result. Temperature, charging losses, calibration, and limited observations affect this trend.

Qualified observations

Capacity trend

Rolling evidence, preserved without smoothing away variance.

Temperature-aware estimate

Personalized range

475kmestimated82% confidence
Evidence
454.3 km
Minimum evidence reached
Recent efficiency
158 Wh/km
Last ten drives
Lifetime efficiency
165 Wh/km
All retained drives

Conditions matter

Efficiency by outside temperature

Below 10°C
No evidence0 km
10–20°C
173 Wh/km140.1 km
20°C and above
161 Wh/km314.2 km