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If no traffic on the road, and you are not planning stop, is coasting in neutral better? Is it related to the driving speed, too?
Like, driving in city, coasting in gear can't coast too far because of 1) drag from engine, 2) room for speed reduction.(40mph to 30mph)
Driving in freeway may be different. 1) the motion of the vehicle is much higher (higher speed), that may overcome the drag from engine (especially on a deep downhill) 2) much larger room for "fuel cut period". (from 65mph to 30mph)
Am I right? Any opinion/correction?
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