On Wednesday February 27, 2024 while driving on the highway suddenly after about 15 minutes the engine light came on stating "Engine Overheating - idle engine." The car decreased speed to about 40mph in a 60mph speed zone and then continued to decrease to 20mph with black smoke excessively blowing out of the exhaust and then a rattling /knocking sound continued from the engine until the car stopped in which I was able to pull over to the side emergency lane. My safety was at risk due to the car's sudden decrease in speed to a stop on a busy and crowded highway. I have been on the highway at least 5-6 other times in which the car almost stops on a busy expressway. I have brought the car to the GM dealership on several occasions in which I received 2 recall letters: one September 2019 (regarding the evaporative emissions purge valve does not properly close) and another recall letter November 2021 (regarding a condition that could cause the turbo charger to fail due to a sticking wastegate actuator linkage) from GM describing that there were recalls on my 2016 Buick Encore. After bringing the car to the GM dealership where I purchased the car, I explained that the engine will almost come to a stop. I described that it was very frightening to drive the car like this. The service center did complete repairs however the stalling engine continued and I continued to bring the car to the dealer complaining of this concern each time. The vehicle was not inspected by the police or insurance representatives. The Engine light sensor would continue to appear on the dash in which I brought this to the service department's attention at the GM Dealership. The GM dealership tried to correct the engine's problem but never succeeded, therefore the engine was defective and unsafe to be driving.

- Highland Park, IL, USA

2016 Buick Encore VIN # [XXX] with 67,584 miles. My car's check engine light came on. Upon checking the code at O'Reilly Auto I was told I had to see a mechanic as it showed code p0299, Turbo. I made an appointment at Garrigans Auto repair Shop, a reputable shop. After they inspected the SUV I was told the turbo had a crack and needed to be replaced. On 7/14/2023 I had the repairs done at a cost to me of $1,480.49 (attached). The car runs fine now. On 10/12/2023 I had another repair done on the car. This was the turbo emissions coolant line. While there, Thomas at the counter said he just received the notice of a "Special coverage [XXX] Turbocharger Replacement". I thanked him and contacted Buick. I talked to Diana and gave her my VIN number. She informed me of the extended coverage as long as my car was not more than 10 years old or more than 120,000 miles. My car has 67,584 miles (notice attached). She sent me the form and I filled it out and returned it (copy attached). The case number is [XXX] (attached). On 10/23/23 I received a call from Diane at Buick informing me my claim was denied. She said it was denied as it was not done at the dealership. If I had sustained a problem before Nov. 2021 I could file a claim but it had to be submitted by Nov. 2022. My work was done this year at a local shop. She said since it was not done at the dealership it was not covered. I told her I never knew of the 'special coverage' until after the work was done. She said it is not refundable. I asked for a supervisor who said the same thing. My issue is there is a serious malfunction of the turbo that could happen while I am driving down the interstate at 70 miles an hour only to have sudden reduced power or timing chain breakage causing serious damage to the car not to mention being hit from behind or when passing a semi due to loss of power or total engine malfunction (attached). Now I am contacting the NHTSA with my complaint. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C.

- Tucson, AZ, USA

I was on the Interstate I80 in Bellevue Nebraska. While trying to accelerate, she started to slow down the check engine light came on as she was slowly losing speed exited the interstate, took it to auto repair service. Turbo charger needed to be replaced. This Buick encore had 56,726 miles.

- Bellevue, NE, USA

2/2017- purchased new 2016 Buick Encore at honolulu GMC in first 2 years- dealership replaced 4 batteries I have all stock items I haven't added/upgraded anything on the vehicle they said I had no warranty after 50,000 miles which was a lie after having to replace the battery 2 more times and water pump once successfully and not at their dealership. 1/2021 I found the original purchase papers, while deep cleaning car before taking in to be fixed elsewhere and then GMC admitted I had an extended warranty. Due to long wait times nearest appointment in 2/2021. 2/2021 took to fix A/C blowing warm, engine lack of and losing power (which we took in for this before and they said nothings wrong just needed an oil change or something, gotta find paperwork for that repair to be sure) and parasitic battery test they didn't do the battery test (of course they didn't) they fixed the A/C but instead of using the warranty, charged me a higher diagnosis fee and never filed the claim, said the engine was due to subpar spark plugs we took back our car and replaced spark plugs with denso. There was still the same problems. 3/23/2021 now they're saying cylinder 1 and 3 spark plugs are stuck want to charge $2500 for full fix, warranty will cover $1300, balance is for gaskets and liquid refill. Note: No one changes the settings in a torque wrench in the middle of doing spark plugs. How is it only 2 are seized? they're lying I need a lawyers help putting this here in case any one else had similar. Multiple other issues in between these. I have video recordings of some of these instances and paperwork for each repair

- Kaneohe, HI, USA

Service light came on after being on the highway car started pulsing and now my car is idling rough.

- Harrison, OH, USA

Multiple lights came on at once and needed an intake manifold, pvc tube, valve cover, all which were repaired and the car continues to jerk forward intermittently on acceleration and deceleration.

- Port Orange, FL, USA

I submitted a prior report. My car was in driveway and I went to start it in the morning. I had been out in evening prior. I started my car and it smelled like fuel. I had to take it in after I test drove it on way to the dealer for service (lucky I was off that day. It had a fuel leak and needed a hose replaced. To me this is a serious failure of a part with only approx. 6500 miles on it.

- Sterling Heights, MI, USA

I went to start my car in the morning after it sat at night, it was in driveway (I had driven the evening prior) and it smelled of fuel when I started it. Nothing noted leaking from under the car anywhere.

- Sterling Heights, MI, 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