The EPA numbers don’t mean much to me, especially given the wide real world variance. The Tesla range report link above shows you can go from over 300 miles of range at the EPA tested 60mph, down to ~230 miles at more realistic freeway speeds, all due to air friction. As a side note I have a hunch that this also means you can gain a lot of mileage by drafting behind other vehicles.
There are some real world controlled track tests out there showing that cars like the Audi E-tron get 195 miles to an EPA rated 200, while a 300 mile EPA rated Tesla gets ~230. In fact all of the Teslas tested dropped ~50 miles off their EPA ratings, while all other tested cars nearly nailed or even exceeded their EPA values.
This isn’t to bash Tesla, perhaps there were flaws in the test that only impacted the Teslas, but to show that 1) in the real world you have to be prepared for wide variance in range with any EV. They’re super efficient, but also fickle, you have to go into it knowing your range will vary significantly 2) Don’t choose a Tesla just based on range, thinking it’s the only EV that will go 250+ miles without stopping. You will likely want to stop and charge well before 200 miles, like any other EV, unless conditions are just perfect.
As for the XC40, the Polestar 2 has an identical drivetrain, battery, and is rated at 275 miles EPA. The XC40 has not yet been rated, most assume it will be at least 200, which is why everyone is quoting 200. It should all be taken with a grain of salt though because these tests are done on rollers at 60mph with no wind resistance and a static derating factor.
In the end though, I’m thinking if a 200 mile rated E-tron gets 196 on a track test, and a 320 mile rated model X 100D gets 233 miles on the same test, the XC40 is probably going to be right in there too in the 210-220 real range.