CRX vs MX-3 aero, When aero doesn't seem to work

[Cd]

CRX / MX-3 overlay :
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[aerohead]

The CRX 1.5-liter has two side mirrors,175/70 SR tires,and I'm guessing the AC is operating,so more cooling flow.It's got Cd 0.35.That would make the Mazda the winner @ Cd 0.32.
What's that do for you?
At this coefficient there could be thousands of minute differences in architecture which would add up.
Laboratories are the only way to 'know' about these things.

[BabyDiesel]

Originally Posted by aerohead

here's something to consider:
*any car built in 1968 or later can achieve Cd 0.25 with detail optimization.
*any car that you can think of!
*thousands of body types can achieve Cd 0.25.
*and getting there can involve any and all the parts of the body and wheels.
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This is too true. My Escort ZX2 (which has ties to the MX-3 and other Mazdas), Cd sits at 0.269 as of Spring 2015. This is down from 0.33 Cd starting out bone stock, a 18.48% reduction is drag!

With future optimization planned, I think the ZX2 can achieve Cd 0.24x before I get to work on the boat tail.