On Saturday, January 17, 2015 at 3:55:10 AM UTC-5, Mr. Luddite wrote:
http://www.greencarreports.com/news/1094588_will-ultracapacitors-save-start-stop-systems-from-consumer-wrath

My Audi A6 has the start-stop system on it. Fortunately, it also has a button that allows you to disable it, which I did. The article points out one reason, additional wear and tear on the battery. The second reason that they didn't point out is the wear on the starter and engine itself. With the type of driving I do the fuel savings would be insignificant anyway, and would never come close to paying for the added maintenance.