To be honest, is it really worth worrying about? I love having the feature and abusing it when I do medium journeys or journeys when going into town with many traffic lights to possibly stop at.
I guess as more cars may hopefully be fitted with this technology (I don't see why not!), then the components involved will drop in price in years to come.
Regardless whether governments around the world I trying to play the carbon-reducing card, then all I can say this going to save me petrol in comparison to people who want to keep the feature off. More pennies in my pocket
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