How long do Tesla batteries last?

Sourced degradation studies and warranty pointers — no invented lifespan.

Independent fan site — not affiliated with Tesla, Inc. Figures are cited with retrieval dates. Not legal, tax or financial advice.

Full explainer with dated figures: battery degradation.

Geotab's multi-brand EV fleets show roughly ~2.3% capacity loss per year on average (study cited on that page — not Tesla-only).
Read the Tesla UK warranty PDF for your model year for years/miles and retention thresholds.
Cold weather cuts range temporarily — that is not the same as permanent degradation. See winter range.

We do not invent a “batteries last X years” marketing number.