Odds are the Model 3 will have similar software option to dial down amperage manually, yourself, which MUST be done before using any such non-Tesla adapter. But, it seems likely none of us have driven the final production version, so we don't know for sure what the interface/manual adjustment options might be. But, to reiterate what others have noted, on the Model S, you can "get away" with using these third party adapters, as long as you always check the breaker, and dial down the amps to 80 percent, or maybe 70% to be safer if you don't know wiring, or if its old, etc, of the breaker max. I've had my S for almost 4 years, driving all over the country, and some in Canada. For insurance, I bought a set of all the common adapters, maybe spent $200 or so. Only used them a few times, but when needed, I was happy to have them. Now, with Superchargers popping up everywhere, and a new one opening every week or two, this is a lot less of a concern.