[Hersbird]

I think when they say there was is NO benefit with the Epa test, they mean 5-7% isn't ENOUGH to offset the cost of the batteries, programming, and starters. 5-7% gain is probably more then other tests have shown using the epa standard because as pointed out the epa test doesn't have much idle time.

I also question exactly how they did the test. Did they disable the start stop of those cars and then run them with and without? Even then the savings they quote are based on numbers none of those cars deliver, and numbers based on future CAFE standards no cars will deliver. Saying a car with start stop installed but disabled loosing 5% efficiency, is not really the same as if that car was built without the added weight and complexity of the start stop in the first place may show less of a penalty. So based getting 30-40 mpg and seeing more realistic 3-4% improvement you would only be saving $50/year which should never pay for the initial investment and repairs of the system. On a hybrid it makes more sense, the stuff is already there and also allows for automatic EOC and pulse and glide.