So some people do buy the Tesla wall charger which will cost you $550 plus installation. The advantage of the Tesla charger is that they say it is a little faster or more miles in an hour into your battery, but only a few. I personally do not see the need to spend that kind of money on top of the electricians charge to install the electrical work for the 14-50 outlet. As far as plugging the EVSE in and out, you just keep it plugged into the 14-50 outlet all the time and plug into the M3 when charging, don't see the hassle. In the US all public Level 2 and Superchargers have the EVSE attached to them, so don't see why I want to carry it around on a regular basis.I got a Tesla charger, which was less expensive than several of the other brand chargers. The other reason, which some will disagree with, is that if there were a problem related to the charger and the car, Tesla would not be able to shift the blame. The cost to install it was probably not much more than putting in an outlet, as it is pretty straightforward. You can download the instructions to check; I almost decided to do it myself, but among other things did not want to drill through the brick wall to run the heavy duty wire needed for any high amp socket. If you use the cable that comes ith the car you will be unplugging and coiling it regularly, which is a waste of time (and not much fun). You could leave the cable at home if you only use the car locally, but I do not do that. Enjoy the car!
Perhaps this point is for another discussion but worth mentioning: OP check your local building code with the town, probably need to have the outlet permitted. So the electrician has to go to the town and pull a permit. Damn, I had that done and it cost as much for the permit in my town as the electricians bill, that is because they farm it out to a 3rd party.
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