2017 Ford Mustang engine problems

Filed Oct 13, 2026 · Engine · TX

I have attached a complaint which sets for the odometer fraud resulting in severe damage to my engine. I have also attached mileage discrepancies and the documentation created and maintained by AutoNation Ford Valencia which records my odometer at 26,250 in September 2022 and after taking my vehicle in for service of the air condition, I received it back with an odometer reading of 25,134 which appear on the odometer. Please review my complaint and supporting documentation.

Filed May 26, 2026 · Engine · 50,000 miles · PA

The contact owns a 2017 Ford Mustang. The vehicle was taken to the local dealer for a routine timing cover replacement. The contact believed the engine was damaged while being serviced. Upon retrieval, the check engine light was illuminated. There was an abnormal ticking noise detected. The vehicle had misfired. The vehicle had not been diagnosed or repaired. The manufacturer was not notified. The failure mileage was approximately 50,000.

Filed May 14, 2026 · Engine · CA

Head gasket failure, specifically corrosion of the engine block. One day the car just did not start at all, with no clear indication of head gasket failure until compression test was ran. Symptoms include coolant levels getting lower each week, with constant refills needed. Random misfires. Smoke randomly emitting from the exhaust when idle. Has not been inspected by the manufacturer, police or insurance.

Filed Jul 7, 2025 · Engine · 115,288 miles · FL

The contact owns a 2017 Ford Mustang. The contact stated that after the vehicle was started in the morning, the vehicle was idling rough. The contact stated that later while driving at various speeds, there was a misfire coming from the engine. The contact stated that while checking the engine oil level, the contact became aware that the coolant reservoir level was low. The contact refilled the coolant reservoir however, the engine misfire continued. The contact had taken the vehicle to a local dealer who diagnosed the vehicle and determined that there was coolant intrusion into the cylinders, and that the engine needed to be replaced. The vehicle was not repaired. The contact notified the manufacturer of the failure and was referred by the manufacturer to contact the federal safety agency Safety Hotline to report the failure. The failure mileage was 115,288.

Filed Jun 4, 2025 · Engine · 80,000 miles · FL

The contact owns a 2017 Ford Mustang. The contact stated while driving approximately 40 MPH, the message "High Temperature - Pull Over" was displayed on the instrument panel. The contact was consistently adding coolant to the coolant reservoir for the vehicle to return to normal operation. The failure had occurred on several occasions. The contact stated that there was no warning light illuminated. The vehicle was taken back to the residence. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was approximately 80,000.

Filed Apr 30, 2025 · Engine · 81,000 miles · TX

The contact owns a 2017 Ford Mustang. The contact stated that upon starting the vehicle, the check engine warning light was illuminated. The vehicle was taken to Auto Zone, where the contact was informed that there was misfire in the engine. The vehicle was then taken to the dealer, where it was diagnosed that there was coolant intrusion into cylinder #2. The dealer recommended that the long block be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for information on the federal safety agency Campaign Number: 16V779000 (Engine and Engine Cooling). The failure mileage was approximately 81,000.

Filed Mar 3, 2025 · Engine · 25,000 miles · NJ

The contact owns a 2017 Ford Mustang. The contact stated while driving at various speeds, there was white smoke coming from under the hood. No warning light was illuminated. Upon further investigation, the contact related the failure to TSB: 19-2260; however, the vehicle was not included. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 25,000.

Filed Oct 31, 2024 · Engine · 31,000 miles · CA

The contact owns a 2017 Ford Mustang. The contact stated while driving 30 MPH, the check engine warning light illuminated. The vehicle was taken to a dealer where it was diagnosed with coolant intrusion into the engine. The contact was informed that the head gasket needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 31,000.

Filed Jul 23, 2024 · Engine · CA

To provide some context, I purchased my Mustang new in 2018, and it currently has 40,000 miles on it. Approximately four weeks ago, I began experiencing a "shaking" issue when cold-starting the engine, accompanied by the check-engine light turning on. I brought my vehicle into your service department, where I was informed by the service representative that the problem was related to the spark plugs. After paying $600 for what was purported to be a fix, I retrieved my car, which drove fine for about a week before the same issue recurred. The engine began shaking again, and the check-engine light reappeared. I promptly scheduled another appointment, explicitly mentioning that the problem was identical to the previous one. Upon dropping off my car, I was told that the mechanic couldn't determine the issue from the initial diagnostic. After three days without any updates, I reached out to my service representative, Jack, who then informed me that my car required an engine replacement due to a coolant leak—a problem he described as a common issue with EcoBoost engines. The cost quoted for this repair was $9,000, an amount I find exorbitant given that my car's total value is around $12,000-$13,000. My primary concern now is the nature of the engine issue. Given that this problem is apparently common with EcoBoost engines, I believe it is a manufacturing defect that should not be my financial responsibility to fix. Furthermore, during my research, I discovered recalls and class action lawsuits related to this exact issue—information that was never communicated to me by your team or at the time of purchase. Unfortunately, my vehicle is not included in these recalls. Coolant leaking into the engine will eventually make my engine overheat and potentially crack the engine. This is a manufacturing issue, and should not be my financial responsibility.

Filed Jul 9, 2024 · Engine · FL

The overheat light came on in the car a 2017 Mustang Ecoboost with only 82,000 miles. Had the car towed to the Greenway Ford dealership in Orlando and they said that there was evidence of coolant in one of the cylinders and the engine needed to be replaced. The Service Advisor at the dealership said that this was a known issue with the 2.3 liter Ecoboost engine and premature engine failures. An engine overheat could be a safety hazard or create an issue if the engine failed in traffic or on the highway.