After many weeks of problems, on and off issues with it, I'm driving along then then the dash info center reads service stabilitrack/service traction control/power reduced! The car goes in to limp mode, I pull over and turn off car and then restart and then everything is then it's okay. It happens many times over many days.

I took it to dealer and they replaced the high pressure fuel pump and high pressure fuel rail sensor, and now everything is good!