Quote:
Originally Posted by MetroMPG
completely anecdotal, but in the same hot weather you're probably talking about, I did a trip at 80 km/h = 50 mph with both windows wide open, and then the same trip with both nearly closed. Same MPG on both trips.  |
It's often pointed out that drag effects become more noticeable at speeds above 80km/h, but I'm sure even a little below that speed they're not negligible at all.