Our vehicle started losing pick up and go in the middle of driving about 2 weeks ago. Check engine light came on, so we took the vehicle to identify the issue. Error codes P0299 turbo/super charger underboost issue was identified. We called the dealership and were told the part is on backorder until maybe July. Even after market parts apparently are unavailable because GM is purchasing them. We contacted service manager at dealership because we are without a car that we are paying for and there is a huge concern that if the part is this difficult to obtain, there must be an undisclosed issue going on here. The service manager said they are only able to obtain updates for parts once the part is ordered, but also did confirm there is ( not necessarily a backorder, but the part is hard to come by!?!). he could not answer why. He did encourage us to contact Consumer Affairs to escalate our concerns. We did contact Consumer Affairs and were directed to contact NHTSA. We currently are without our vehicle that we continue to pay for and continue on this journey of tell this person or department and we are getting nowhere fast. Something bigger is obviously going on here and as always the paying customer continues to be the one paying for it. We want the part and it would be nice to not be inconvenienced with scrambling everyday on how to get to/from work and how to get to/ from caring for elderly parents who are in need of our assistance to eat, bath and remain safe. This issue is a huge inconvenience and truth needs to be told by GM/Buick.

- Warrington, PA, USA

Anti theft light comes on intermittently. When this happens the car acts like it might stall when idling.

- Canton, GA, USA

The contact owns a 2016 Buick Encore. The contact stated that the vehicle would crank unexpectedly while driving at extremely low speeds. The vehicle was equipped with the auto start feature when coming to a complete stop, which could not be disengaged. The contact described the failure as if the ignition were being started while the engine was already running. During the failure, the vehicle would stall and the contact would have to come to a complete stop and restart the engine. George nahas Chevrolet (4135 fl-44, wildwood, fl 34785, (352) 504-4538) stated that they could not assist unless there was a warning indicator on the instrument panel. The dealer was unable to duplicate the failure. The contact called the manufacturer and left a voice message. There was no follow-up after the contact and manufacturer tried to contact each other several times. The failure mileage was 19,500..

- The Villages, FL, USA

Yesterday I started the vehicle up and it quit. So I started it again and it ran. Then today, I was backing out and it died out. I started it up again and drove towards home. Then I was traveling 40 plus miles an hour when the car shut off. I hit the brakes and it started rocking. I was almost hit from the car behind me. I had it towed to the Buick dealership.

- Kettering, OH, USA

Heavy vibration in lower gear while shifting seems to come from engine or transmission cant tell but strong vibration can be felt in shift handle when you attain higher gear seems to stop on city street or highway same experience worse in lower gears.

- Monroe Township, NJ, USA

The vehicle is new, has 250 miles, was purchased from penske Buick in cerritos, ca. Several mornings it has either failed to start, or started and promptly failed, when put in gear and the engine has shut off. The vehicle engine stopped during a turn onto a city street, causing a near collision with parked cars. I have taken the vehicle to penske cerritos, ca on 2-4-17 along with a letter detailing the safety issues and near collision.

- Redondo Beach, CA, USA

The contact owns a 2016 Buick Encore. While driving various speeds, the contact noticed a strong odor in the vehicle. The check engine warning indicator illuminated. The dealer diagnosed that the ECM sensor needed to be replaced. The vehicle was taken to the dealer twice, and the dealer replaced the map sensor the contact still noticed an odor in the vehicle. The manufacturer was notified. The failure mileage was 28,000. Updated 02/09/17

- St. Michaels, AZ, USA