 When in slow moving traffic the Auto Transmission does NOT downshift at RPMabout 1100 or speeds about 15 MPH, and the engine begins to stutter as if it was about to stall.To correct this the driver must either press the gas pedal or manually downshift to the lower "S" gear selection.Pressing the gas pedal is dangerous unless there is much space between you & the car in front od you. Downshifting requires some decision time which is not always an alternative in highly congested traffic.The Tiguan is a wonderful car I would highly recommend EXCEPT for this defect!