CARS.COM — Gas prices may be low now, but fuel economy remains an important factor when buying a vehicle. One strategy automakers use to improve mileage is an automatic engine stop-start system (you may call it a start-stop system) that switches the engine off when the car is stopped with the brake pressed, saving fuel by reducing engine idling and also reducing emissions.
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Some systems in vehicles are unobtrusive; some are very obvious. The ideal system would remain completely unnoticed by the driver and any passengers and retain an option for the driver to turn it off. We asked the Cars.com editors to weigh in with which cars do it best and which have systems that need more refinement.