2019 Ford Mustang

The contact owns a 2019 Ford Mustang. The contact stated that while driving at an undisclosed speed, it was extremely difficult to see through the rear glass. Upon closer inspection, the contact became aware that the rear glass made objects appear warped. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 3,700.

My vehicle recently had a head gasket leak due to a faulty engine block design. I noticed one day the coolant was lower than it should be but nothing concerning, over a month or so it got progressively lower & the car would also sputter/misfire on startups from time to time. This is due to coolant slipping through the gasket & getting into the cylinder & oil which can lead to catastrophic engine failure or worse. Eventually I got a check engine light & was told it was a misfire after running a diagnostic on the vehicles OBD2. I researched what the issue could be &it became more & more apparent that it was a head gasket issue. The oil was contaminated & coolant was getting very low. Apparently it’s a big issue since Ford is now facing a class action over the defect. The vehicle also has some issues with the transmission, for example ill start the car up on a cold California morning 50°F & let it warm up before driving & when I go into reverse after the car will jolt hard as if you were backing up & hitting something like a wall, even in the afternoon when you start it from a cold start & go into reverse it will do it. Not sure why but it’s concerning to say the least. The transmission also feels confused when shifting, when I’m in 4th about to push fit it will get confused & revs will drop slightly before going up again to up shift, also when downshifting due to braking the shifts can feel a bit hard, especially when needing to stopping fast. The engine & transmission are the most importantly parts of a vehicle & without them working properly is something no one should have to face.

The 10-speed automatic transmission (10R80) in my 2019 Ford Mustang GT began malfunctioning around 84,000–85,000 miles, displaying a consistent hesitation followed by a sudden jolt during acceleration between 15–30 mph. A Ford dealership confirmed the issue and diagnosed it as an internal leak in the clutch drum assembly, referred to as a “CDF drum internal leak.” The vehicle has not shown any warning lights or dashboard messages, and the symptoms developed gradually before becoming consistent. The malfunction causes the car to unexpectedly lurch forward during normal driving, which poses a safety risk to myself and others, particularly in traffic, at intersections, or when merging. This unpredictable behavior could lead to loss of control or rear-end collisions. The transmission remains installed in the vehicle and is available for inspection upon request; however, will be fixing it soon since it is my only car. To date, the vehicle has only been inspected by the dealership and not by the manufacturer, police, or insurance representatives.

There is TSB that was issued on the shift forks of the 2018-2019 Ford mustangs where aluminum shift forks were originally installed which led to cracking and breakage. Due to this a TSB was issued reverting back to them using steel. My son purchased a 2019 Ford Mustang with only 9000 miles on it three months ago and this part has broke and no one wants to cover the Repair. This should be covered Repair. There should be a recall.

Vehicle was purchased new in 2019 and in 2022 my transmission started with harsh gear changes which resulted in a reprogram/relearn of the transmission. As of May 2025 my transmission is doing the same and has now caused my vehicle to stall while at a red light. In addition to this I have not seen any warning signs or check engine lights.

A vehicle was listed for sale in June 2025 with an odometer reading of 115,152 miles. However, a CarFax report dated March 13, 2025, showed the mileage as 37,707. This is a discrepancy of over 77,000 miles in less than three months, raising serious concerns about odometer tampering or title fraud. The issue was discovered prior to vehicle delivery, and the transaction was canceled. The dealership has not provided any explanation for the mileage increase. This discrepancy may mislead future buyers and compromise the vehicle’s maintenance and safety records. The vehicle was not inspected by a mechanic before cancellation. The concern has been reported to the Better Business Bureau (BBB), California DMV, and CFPB.