OP is likely talking about the system that automatically shuts down and restarts the combustion engine when you come to a complete halt. This is meant to reduce emissions and fuel comsumption.
I don't get why people are so opposed to it, I love it and I drive a Mercedes-AMG. Fantastic feature in traffic.
Audi driver here, and I hate it. Especially hate that I have to push a button every time I start the car to disable it. What an awful feature. Then again, I live in rural America and traffic isn’t a frequent thing I experience.
If you don't experience traffic frequently, then why would it bother you? It does nothing if you're just driving along. And I'm curious - what exactly makes you hate it?
I can't help but think that the extra wear and tear from start/stop cycles will end up exceeding the value of the fuel saved.
People always made that argument, but seeing as S/S systems have been in use for at least a decade now and we're not seeing catastrophic increase in rates of alternator/starter failures, I'd say that's not true. And it's not about fuel savings for me at all, it's just nice that the engine shuts off in traffic, it's quiet for a moment while you're standing still.
What's the link between start and stop and pedals ? Isn't it seamless for the driver ?
With a bit of practice, yes. First time I drove such manual transmission car was very confusing. I didn't know the engine stopped because I switched in wrong gear and didn't have enough torque or what. Felt very frustrating. After I got used to the transmission it was ok. I guess it would become seamless after a couple of days.