The car’s engine start/stop feature has failed multiple times while at an incomplete stop. This failure endangers the driver because the car will not drive, forcing the driver to put the car in park & manually restart the car. This failure has occurred at least 6 times, reported as the original owner of the car for 3+ years. Recently, as a potential result(?), the car’s check engine light has appeared (@52k miles). The dealership suggested replacement of the N80 purge valve,~$400 repair at VW dealership, to fix the tandem start/stop error & check engine light issue.