I've noticed higher fuel economy by using it. I also have the same concern about the wear and tear on the starter, etc but I have the 100k warranty so I'm going with it... my car is going in this week to have both lower control arms replaced. This is the second 2019 RDX sold at this dealer to have this done. Both of the cars (mine and the other one) have the highest mileage of any 2019 RDX sold from the dealer. Hope this is not a major 1st generation design flaw. Also lost of glitchy issues with the apple play and inability to change radio stations via the steering wheel controls.