Quote:
Originally Posted by Phase
Can anyone explain why the new Mercedes EV that gets 1000km of range is 2 points lower in drag than the xl1? Heck the xl1 has a longer boat tail, is narrower, rear wheel spats, and deleted the side mirrors
The Mercedes keeps the side mirrors and doesn’t use rear wheel spats!!
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1) There were dozens of subtle aero optimizations performed on the M-B EQXX.
2) And the EQXX is actually 12% 'longer' than the XL1, where it counts.
3) At a difference of 14.4-counts, each little 'cut' for the Mercedes made up the difference.
4) And as others have already mentioned, the EV's 'engine' is up to 350% more efficient than the VW's Diesel. That makes for less heat flux, less cooling load, more time the active radiator shutters are 100% closed.
5) For it's drag coefficient, the XL1 has the worst shape compared to 1937 Schl'o'rwagen, 1987 GM Impact, or 1987 Renault VESTA-2.
6) Too much 'nose', not enough 'tail'.