Browsing online and talking to various people in real life haven't given me the definitive answer on this issue so far. I understand how it works, I'm interested in behind the scenes effects on fuel consumption, ecology and engine amortisation. Do those 30 - 60 seconds of resting combined with the repetitive starts create more damage or not compared to when this function is off? Why? I'm interested in both long-term and short-term effects.