Quote:
Originally Posted by clivem2
I've always thought of MSport aero as a styling exercise which results in worse aero. Most MSport models across the range have larger (often dummy) cooling ducts which increase the frontal area. Couple this with the wider tyres standard on MSports and you have more aero resistance.
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I believe dummy ducts are actually better for aero than open grills (which simply create turbulence).