NHTSA Complaint #11698169 — 2019 FORD F-150

This 5.0L Coyote engine has been very problematic. Since 2020, it has made a chatter at low speeds which sounds like a motor dieseling. After numerous visits and complaints to Ford with trying to address the noise, the service manager said it was due to running 87 octane instead of 91+. This vehicle does not mandate premium fuel by the manufacturer but infact the chatter or dieseling goes away when using the premium grade fuel. Consumers should be made aware of this prior to buying a vehicle. Furthermore, the dealership could not tell me if this chattering has caused damage to the engine which could result in shorter life on the engine. This problem exists to this day if not using premium fuel.