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- Jan 20, 2013
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Similar situation, plus the fact that two substantial stretches of 70kmh road on my drive to work have been reduced to 60 in the last couple of months.
I don't consciously drive for economy but I leave the ECO on most of the time and only use AC on the hottest days, preferring open top and/or windows.
In a TA, 60 will save you fuel over 70. A/C uses less fuel then opening the roof at even modest speeds, even windows down uses more fuel at somewhere around 70km/h.
I keep ECO OFF and windows up nearly all the time. Ideally, keep the windows up and use just the fan to bring in cool fresh air.