Tech Leader Pro
Tech Leader Pro
Aug 11, 2023
Tech Leader Pro podcast 2023 week 32, my thoughts on the Tesla battery range lawsuit
Play • 13 min

Tesla are being hit with another lawsuit, this time about their claimed battery range of their cars. The reality is these are range estimates not guarantees, and are based on optimal conditions.


  • There is a new class action lawsuit against Tesla over their range claims.
  • The lawsuit alleges that Tesla "marketed its electric vehicles as having a grossly overvalued range in an effort to increase sales to consumers."
  • The lawsuit was filed with the U.S. District Court for the Northern District of California. In it, Tesla faces charges of fraud and breach of warranty, among others.
  • Source:
  • The fact is, EV range claims are estimates, NOT guarantees.
  • Those estimates are for optimal environmental conditions and optimal driving styles.
  • For example, if you are driving in winter conditions (environmental conditions), or you are heavy on your acceleration (driving style), then that those will reduce the battery range.
  • All car OEMs make similar estimates.
  • In general, all engineering estimates tend to be inaccurate.
  • Estimates are not contracts, they are estimates based upon optimistic assumptions and conditions.
  • If Tesla loses their case on battery range estimates, the net result will be car OEMs will no longer give estimates.
  • Previously, I done a whole podcast episode on why engineering estimates are unreliable:,-Project-estimates-are-unreliable
  • In that episode, I gave my arguments why we should reduce our emphasis on producing them, as they are not scientific.
  • During my long career if I was sued every time I gave a bad engineering estimate, I'd be bankrupt by now.
  • What I am working on this week:
    • Nothing, on holiday!
  • Media I am enjoying this week:
    • Foundation season 2.
    • Neuromancer by William Gibson.

Notes and subscription links are here:,-my-thoughts-on-the-Tesla-battery-range-lawsuit

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