Quote:
Originally Posted by WesternStarSCR
I just saw some real test data today from a tier 2 supplier. When running EPA city cycle, they only saw 3% max FE bump with start stop. So unless manufacturers are do some testing in a big city that maybe will show a more significant and marketable gain, and allowed to publish results on window stickers or marketing, I definitely now see why Mazda and others will not bring their start stop systems to USA.
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That also highlights a downside the EPA window stickers. If the manufacturers make changes that do affect real-world FE, but don't show up in the EPA test cycles, for all practical purposes it's as if it never happened.