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Found the AMG GLC 63 dimensions, so now just lacking the Cds for them and a few 1/4 mile times and chart will be complete. Also ran the HP-Speed simulation to see what HP is required to run at 140mph to gauge the various design aerodynamics and that has its own chart as well. Not surprisingly the top SAVs in that category have the lowest Cds.
It seems the M series usually have a higher Cd than their lesser-powered siblings, possibly from all of the air and cooling vents needed which no doubt increase the drag? One way to improve such might be air suspension which can lower at high speed. The Levante S has such, and I wonder if that is what allows it to have a Cd 0.02 less than the smaller frontal A(rea) X3 M40i. Will be interesting to see what Cd the X3M's design produces.
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