NHTSA Complaint #11611023 — 2020 FORD ESCAPE

My car is making a severely loud noise when I start it up, and sometimes when I’m driving or stop driving. When I try to accelerate sometimes, it feels like nothing is happening and then all of a sudden my car will pickup fast and jump RPMs. When going slowly through parking lots it will kind of putter through and jerk. I took it to does to get diagnosed and they said that it’s the flapper in the exhaust that prevents all cylinders from running at the same time. I was going research before they told me what it was and I saw other people have had this problem as well. The car is only 4 years old with 34,000 miles on it. My bumper to bumper warranty ended at 3 years or 36,000 miles and they’re saying it’s not covered under warranty and the whole muffler/exhaust system needs to be replaced for $1200. I believe this is a safety issue with the way the car drives on the expressway and not being able to accelerate and merge properly along with the fact that the exhaust effects the performance of the engine which feels like it’s going to give out at any moment.