Cars with Start/Stop also
Cars with Start/Stop also have heavy duty starters which are "supposed" to give "normal" lifespans despite being engaged 10 times as often. Yes, they will last the warranty period and beyond. Whether they actually last as long as older starters -- meaning they are 10 times as durable -- is still remains to be seen given that most of these cars are less than 10 years old. It is not just the starter... your battery will also go through much more charge discharge cycles. The new "Start/stop optimised" tranny has a pressure accumulator to help get them going during a restart, does that have the same life cycle we have come to expect from automatics (20~30 / 200~300K miles between overhauls)? Remains to be seen.
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Is 0.2~0.5 mpg worth all that additional wear, costs and loss of refinement? Very much like using using low tension piston rings to ilk out a fraction of an mpg, but causing relatively new cars (4~5 years) to start burning oil and ultimately destroying the engine unless you change the oil much more frequently than recommended... is that 1/2 mpg fuel economy gains worth it? I am pretty sure different people have different priorities. But that should be a decision for consumers to make, not one to be forced on them by manufacturers and extremist regulators.
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My take on this is that these are all a lot of unnecessary complications, compromises and potential mechanical life reductions in search of a tiny bit of fuel economy. It is NOT worth it. If you drink the Global Warming hogwash, go buy an electric car. If you don't, avoid cars with Start/Stop or disable the system. You'll be happier either way.