First posts normally go in introductions else you could get a free fix and we never see you again!!!
Its under warranty take it back and get it fixed.
i have an 2018 (may) VW Tiguan 2.0 TDI it keeps cutting out at speeds of 5-20 mph,most ofton at roundabouts and left/right turns, with start/stop fuel saving/green, engine function turned off, i turn it off, as problem is worse, with it on, anybody else got this problem?
Have you got a manual or DSG gearbox, if DSG this could be the 'coast' feature..... Keith is right if not happy take it back to the dealer, but you might like to read the Coasting thread in the Golf Mk7 or Mk7.5 sub-forum.
2013 Touran SE 2.0 TDI-CR (CFHC - D91) DSG (PBF -G1A) Acapulco Blue Metallic, Retro Fit Front Fog lights, Westfalia Detachable Towbar
2015 Skoda Fabia SE (Mk3) 1.2 TSI(110) DSG Silver. ( I was previously posting as thamestrader)