One problem related to loud engine noise has been reported for the 2015 Buick Encore. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Buick Encore based on all problems reported for the 2015 Encore.
Our 2015 Buick Encore broke down on 9/12 while driving home late at night traveling over the cuesta grade we had a tough time with acceleration and had to drive slow over the grade and on the highway all the way home. Our car was barley moving as we made drove it into our driveway. We had lost all acceleration. Our car was towed to the dealership on 9/13 . We were told we were "just over the warranty mileage allowed 70,000 and had to pay for the repair . We asked gm to contribute since we were barley over the warranty mileage allowed". We picked up our car after the original turbo was replaced on 9/23 and again the car began making noises on the cuesta grade. Again we started to lose the ability to accelerate and had to drive the highway at a low speed to make it home with the car making terrible sounds and noises . This second turbo had failed . We had the car towed back to the same dealership on 9/24. After about a week the dealership called and explained they had installed another turbo which had failed again and they were waiting on parts to replace it which would be the 3rd turbo to be installed in our car besides the original one the manufacturer installed . Each time the dealership stated additional things were happening to the car when the turbo was "going out" . We received a call on 10 /9 (over two weeks from the time the car was towed to the dealership) that the turbo was now repaired and we could pick up the car. We are very concerned for our safety with this car. When the turbo goes out it can cause a wreak since we have to travel on the highway and cuesta grade as we lose ability to accelerate.