If you drive a newer Mazda vehicle, you're probably familiar with its "i-stop" feature. This shuts off your car's engine when you come to a stop and starts it up again when you are ready to move again. It does help to make Mazda vehicles more fuel-efficient, and most people don't find it all that intrusive, but some drivers don't like the idea of having their vehicles shut off whenever they pull up to a stop sign or traffic light.