2016 Mercedes-Benz GLA 250 engine problems

Tl* the contact owns a 2016 mercedes-benz gla250. While driving approximately 30-54 MPH, the vehicle would vibrate and made a rumbling noise under the hood. Once the vehicle reached 1,400 rpms/55 MPH, the failure seized. The contact stated that the vibration could be felt through the steering wheel and accelerator pedal. The dealer could not determine the cause of the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 3,800. ....updated 07/05/16

The contact's daughter owns a 2016 Mercedes-Benz GLA250. The contact stated while driving 15 MPH, the check engine warning light illuminated. The vehicle was taken to a dealer, where it was diagnosed that the crankcase ventilation system had failed. The dealer determined that the engine oil separator needed to be replaced. The vehicle was not repaired. The contact related the failure to an unknown Extended Warranty Coverage.