NHTSA Complaint #11436744 — 2018 DODGE GRAND CARAVAN

I have a 2018 Dodge Grand Caravan I bought used from a CDJR dealer. I went on a 2,500-mile road trip in July 2021. The engine began running rough for about the last 500 miles. When we got home there was about 63,000 miles on the vehicle. I took it to a local mechanic at home in August and he said I had bad fuel so he put in a fuel treatment and had me fill up with premium fuel one to two times. This seemed to help only marginally. A month later I took the van to another mechanic and he determined that there was a misfire in cylinder #2. He performed a relative compression test and said the engine will need to be disassembled and inspected. He called a local dealer and found the warranty was 5 years/60,000 miles. He suggested I call my dealer because this shouldn't be happening even outside of the warranty. I did. They offered no solutions. Very frustrating.