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Oh no, sorry I didn't mean to imply that. You are 100% correct. I just think that adds some context to the 'it only saves .0001mpg' argument

I'm not an expert but I don't think the real idea behind the Start/Stop systems is fuel economy. I think they pitch it to customers that way, but the reality is Ford has to meet Idle Emissions requirements and that's probably the simplest/cheapest way to do so.