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Old 06-07-2010, 02:39 AM   #23 (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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Quote:
Originally Posted by cfg83 View Post
For instance, if you have a V8, the A/C is a lower percentage of your engine load, so it's a more reasonable tradeoff. On my 1.9 liter 4-banger, it has a much bigger effect and I can really feel the HP drain when I try to accelerate. I can see A/C killing my MPG on the ScanGauge because the engine load is much greater.
This is something to remember: just because it is a lower precentage of engine load, and/or does not noticibly change acceleration, doesn't mean it uses less fuel. In fact, I wonder if cars with bigger engines also have a larger A/C system?
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