As the others have said. My 2p-worth:
13AMP plug is 5-6 MPH, and a good deal more loss on "efficiency" than a higher rate charger. (Probably insignificant until getting over 10,000 miles p.a.)
Wall charger is 22MPH, and probably 90% efficient. I agree with
@DJP31, I prefer the tethered cable too, wear-and-tear on the Tesla supplied cable will lead to an expensive replacement.
That's for MS based on its efficiency, so you will get more MPH in an M3 as it is more frugal.
I charged 68% in 7 hours last might - I tend to think of it as 10% per hour, so for my 90kWh battery the numbers work quite nicely, its also "2 miles per percent" with 10% spare, so even my arithmetically challenged Wifee has no trouble with it
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So figuring out the percent-per-hour to charge your M3 and miles-per-percent range is probably a handy metric to know.
Plug in when you get home. Leave it plugged in when you are not using it. It will charge when the level falls far enough. You will always have range should something unexpected happen. "Plug in once a week" is Petrol-car style, suggest you adopt EV-style
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I thought friends would mind me plugging in when i got there - i.e. thinking "
It must cost a lot" - but actually its the first thing they offer, and it is actually about £10 for 80kWh at peak rate so I just take them a nice bottle of something ...
3rd party charging is, currently, universally bad. I do it a couple of times a year and I have never had a straightforward "this is how it should be" experience. 50% of the time, even though I have the APP, I have had to phone up to initiate a connection, often 10 minutes total time to do the connection and disconnection. 50% of my supercharger visits are less than 10 minutes including charging time!
Might be worth considering changing to E7 electricity, depending how much you will use overnight. My night-rate is about 50% of my day rate (and day rate slightly higher than non-E7 rate).
Book a service 3 months before you need it ... lead times are atrocious.
If you don't already know about it have a look at
A Better Routeplanner for trip planning. That will tell you how difficult it will be to get to Yorkshire easily. I go to York a fair bit, but if I charge at Grantham on the way up I don't have enough energy, once at York, to get back to a Supercharger so you might find that too.
if you can plug into 13AMP at your destination (all weekend
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) that will solve that problem, or take a Type-2 cable with you and find a 3rd party charger (that is working, for which you have the appropriate APP, balh-blah-balh ...),or a CCS charger, obviously.
If you are away from home, at e.g. a Shopping Mall car park, which has Type-2 / CCS charging, and the Supercharger is more than, say, 50 miles away, I would charge even if I had 100 miles of range. Its just better to have some spare, family will want to divert for something, or the road-menders will require me to ...
Dunno what part of Suffolk you are in, but you may not be far away from me, drop me a PM if there is anything you need to see / discuss - albeit that MS and M3 are Apples and Pears
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