What kind of responses were you expecting exactly? Let me spell it out for you. In nearing 2 years my mpg has not improved at all, in fact it's gone down by 2mpg if I compare to the early days.
The point about running the R sans aircon and windows and sunroof open was clearly made, but, people have their own preferences which might be more important to them than some extra mpg. I can't speak for others but have never had the slightest desire to buy or spec a car with a sunroof, either to eke out a few additional mpg, or for fresh air into the cabin or a vista from above. Does nothing for me, in fact I find that distracting, preferring an enclosed darker cabin. Similarly I would rather run aircon all the time, keeps the car cool to my desired temp, keeps the system in good order and ime (not everyone's) is the answer to avoiding misting up of windows in certain conditions. I'm afraid, regardless of what car era you come from, if you need to wind your windows down, open the sunroof and eschew aircon to get a negligible increase in mpg, then maybe you have bought the wrong car.
