I read the article. I don't expect artificial testing constructs to equate to real world results be it emissions, mileage, treadwear, etc. My comment above was more of a rhetorical nature. Fahrvernugën and all that.
I saw where Consumer Reports tested the cars at a facility both as is and after disabling the rear wheel sensors finding that mileage dropped from 54 to 50 or so while acceleration to 60 added a little over 1/2 sec. more time. Doesn't seem terrible to me.