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Old 12-09-2016, 08:32 PM   #19 (permalink)
oldtamiyaphile
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Join Date: May 2009
Location: Australia
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UFI - '12 Fiat 500 Twinair
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Quote:
Originally Posted by LittleBlackDuck View Post
Even at cruise I doubt you will hold exactly the same speeed forever. Couple this with hills and a CVT can add to the overall efficiency. Adding in the extra speeds will always have a gain - it may be small but it will be there.

When not at cruise the gains will be bigger.

Simon
It's not that simple of course.

Some GM V8's force you to shift 1-4-5-6 in an effort to improve economy - sixth is never used in official tests (at least the NEDC has never been updated to account for six speed manuals). In essence, a Corvette on the NEDC is a three speed.

Skip shifting is a valid Eco driving technique. I skip shifted (1-3-5) my Renault Kangoo in 100% city use (20mph average speed) and scored a best ever tank of 75% over NEDC. Skip shifting increases average engine load which beats 1-2% gains on official test cycles.
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