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Let's go full SI. One watt is one joule per second, so 1 kWh = 3.6 MJ. Model 3's battery options are from 180 MJ to 295 MJ.

Looks readable, human-scale, easier to type than kWh.

To compare, 1 gallon of car fuel is about 120 MJ of thermal energy content, so about 40 MJ of mechanical output energy content, if we acccount for the ICU efficiency and transmission losses.

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Except electricity is billed in kWh, everything consumes power on kw, and kWh is by far a more intuitive unit of consumption once you get past the basic of educational step of explaining 1 kw for 1 hr = 1 kWh.

As an EE I much prefer kWh, though its not all that hard to add the factor 3.6 if you really want MJ

Most people aren’t engineers and the idea of watt-hours per hour makes eyes glaze over; miles per gallon vs… watt-hours-per-mile ? Nah that is confusing too. Miles per MJ and how many MJ does the car have is nice and clean.

I think you have curse of knowledge, frankly.

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