![2013 Tesla Model S, in July 2017 [photo: David Noland]](http://images.hgmsites.net/tmb/2013-tesla-model-s-in-july-2017-photo-david-noland_100613425_t.gif)
A couple of years ago, as my 2013 Tesla Model S approached the end of its 50,000-mile warranty, I debated long and hard whether to opt for Tesla’s extended warranty, which they call an Extended Service Agreement (ESA). At $4,000, it wasn’t cheap. It provided four years and an additional 50,000 miles of coverage, up to a total of...