[basslover911]

Originally Posted by MetroMPG

I saw a 2.3% improvement from removing the passenger mirror and folding the driver's mirror flat - ABA (small samples) @ 55 mph / 88 km/h.

Reflections on side mirrors: testing drag vs. MPG - MetroMPG.com

But I think your mirrors were also smaller and more aerodynamic than mine.

So what do you think? Oh and at about 65mph not 55mph (I really cant ever go that slow plus my car is in its more optimal range at 65mph so it gets better mpg)... ?

Maybe 3.5 to 4% or is that very optimistic?