[aerohead]

* the Chevy Spark ICE is Cd 0.36. BEV variant is Cd 0.325.
* the FIAT 500 Lounge ICE is Cd 0.359. BEV variant is Cd 0.311.
* the Hyundai KONA ICE is Cd 0.32. BEV variant is Cd 0.29.
* the 2007 Ford Fusion ICE is Cd 0.34. 100% grille-block = Cd0.316.
* the 2016 VW Golf ICE is Cd 0.287. BEV variant is Cd 0.27.
* the KIA Niro ICE is Cd 0.35. BEV variant is Cd 0.35.
* the Spirit of EcoModder, 2014 is Cd 0.2675. With 100% grille-block, Cd 0.2405.
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1) if we're going to talk about cooling drag, how about establishing fixed parameters under which the quanta will be observed and reported.
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2) if electric motors are, say, 90% efficient, and ICE engines approx. 35%, at any given road load, the heat flux to be dissipated across a heat-exchanger would be impacted accordingly. An assumption of like heat transfer coefficients would suggest that, the ICE / BEV cooling systems would require the same proportionality with respect to exchanger frontal areas, flow volumes, and cooling drags.