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New S75 owner and quick mileage test

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Recent journey in an S75 I got the following numbers -

195.2miles using 53.3kWh at 273Wh/mi leaving me a potential 275.18 on a 75kW battery and 3.67mi per kW. Filling up now the typical readings were 12% battery with 28miles left, but at 53.3kW used and 21.7kW left I have 29% left, good for 80 more miles on these numbers.

Not sure I wanted to risk having the typical readings all at zero but still seeing kW left in battery, but do wonder if I could drive beyond those fixed measurements on the EU typical settings (EPA rated miles I believe)
 
Yes it was 100% and had 232 miles at the start. Yes and of course 72.6kW useable as reported.
Funny enough at Norton SC today I filled back up to 100% (it stopped at 98% mind) and it took 62kWh in, although it said I only used 53.3kW overall, so the maths goes off a little between the typical measurements and the "since last charge' measurements, with the typical/EPA giving the battery % and mileage at the bottom in the green battery icon seemingly more accurate than the other method.