We found that 330 miles to be very unlikely as well. More like 270 and then you need to make sure you’ve got 40 miles spare to make sure you can make it to a working charge without going flat.
So in reality the comfortable working assumption should be 230 in my experience. We had the car in winter, perhaps didn’t help.
> We had the car in winter, perhaps didn’t help.
Yeah, especially if it wasn't the higher end model with a heat pump. Winter is definitely the biggest challenge for EV range at the moment (if you live in a place where heating is necessary for any significant part of the year a heat pump is pretty much a requirement).