I am a bit concern with what I am getting out of a new M3 SR+ and I believe the Tesla claims are off regarding realistic use ranges. I don’t have Sentry on, no USB charges, or AC and everything that I can off. Heck, I even set the display to 10% brightness and turn off the headlights during the day.
We charge the car nightly to 90%. The car has a 240 range supposedly so 10% down and you have now 216. Since you are not supposed to use the car below 10% then subtract another 24 miles and now you have an expected range of 192 miles.
In reality, the car shows 213 miles of range in the morning after charging at 7 AM. I drive to work 40 miles and park the card. When I arrive at work, I have 167 remaining. The car stays parked for 8 hours and seem to lose 1 mile of range per hour. Again, no sentry, AC, no Tesla App checks etc. Just plain off, or as close as you can to that.
I leave work at 5 and have 151 remaining. Drive 40 miles back and reach home with 105 miles.
So at the end of the day I drive 80 miles and lost 108 from the range on a good day so it seems that a Tesla mile is really like 1.4 or so of a "terrain" mile so considering not going below the 10% charge the M3 SR+ has a usable daily range of about 150 miles.
Coming from a series 3 BMW, that car did about 400 miles with a full tank so in comparison the M3 SR+ is about to a bit more than a quarter tank of my previous car
I know driving an EV car is different, but these details should be better explained to customers and I wished I would have known before. With the projected or Tesla acceptable decay of 20% on the batteries the range of the car will be further impacted to be almost unusable in my opinion if that 20% comes true.