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Old 02-16-2011, 02:03 AM   #4 (permalink)
Piwoslaw
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Join Date: Oct 2008
Location: Warsaw, Poland
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
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I remember reading here somewhere that certain cars idle around 1000-12000rpm when rolling in neutral "to be ready" to accelerate. My guess is that may be the engineers decided that the only time a car is rolling in neutral is between gear changes, so it may be better to not allow the engine's rpm to fall too low since in a moment it will be in gear and will have to rev up to 2000 (or more) again.
Pretty dumb, so maybe there's a better explanation.
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