&gt;<i>There is a Dutch study which concludes the following</i><p>You should probably link to the study.<p>&gt;<i>3 and 6 years is probably not very factual.</i><p>3 years might be early, but I have a hard time believing that Tesla has hit on some magic as far as batteries are concerned.  The drain on anything I have at home is far more than what you state; my phone battery certainly isn&#x27;t much good after 6 years..  But I have no idea.  I guess we&#x27;ll see as the current Teslas age.