The chart is for EVs sold in Europe and is entirely metric. The link to it is embedded in the article below. Note that the vehicles are ranked on weighted electrical efficiency adjusted for ambient temperature (col. N), not manufacturers' data in the 1st few columns. Article link and snippet quotes:

https://jalopnik.com/check-out-this-chart-showing-the-most-and-least-efficie-1848174238

When talking about electric cars, most of the focus tends to be on range. And to a certain extent, that makes sense. A car that can go 300 miles without charging will probably be more convenient to own than one that only has 100 miles of range. But the other side of that coin is efficiency. Do you know which EV is going to make the most of the electricity you pay for? That’s a little more opaque.

That’s a big part of why this spreadsheet put together by CleanTechnica reader Aat de Kwaasteniet is so cool. It does a good job of not just helping potential EV buyers figure out how efficient a certain car is, but it also lets you compare different models in one place.

Since most of our readers are located in the U.S., I should probably point out here that Aat lives in the Netherlands, and their spreadsheet focuses on EVs that are available in Europe. That means it doesn’t include every single vehicle available to buy here, and some of the cars it doesn’t include will never be sold here.

That said, it’s still cool, and I’m sure you’re old enough to handle the existence of the metric system.

The SI notation could use a mid-dot or space in Wh, but otherwise good. I think we all know it means watt-hours.