Thanks - funny how diesel locomotives stay iddling for hours, yet our diesel cars now turn off when stopped for just a few seconds - due to idiotic CO2 related testing and legislation.
Result, a horrible experience of noise and lurching, often every few minutes in traffic, less responsive so less safe, more engine ware, all for zero fuel actually saved.
Start-Stop in cars does save a considerable amount, which is a fact that can easily be verified, so you pretty much disqualified yourself there with "for zero fuel actually saved"...
The additional wear is not on the engine itself but on the starter components and those are simply designed for the additional load so that they can deal with the starts and stops.
