For hypermilers the automatic shutdown of the ICE's occurs way too late.
A semi-automatic feature where the driver decides to shutdown but the engine starts upon putting in the gear or drive (with auto transmission) would be better and increase mpg. Manufacturers don't build in this logic because official consumption tests must be performed w/o drivers action!
When hypermiling new vehicles (equipped with S/S) for car manufacturers
I'm always ahead of S/S. S/S operation additionally depends on a variety of very conservative conditions.
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