2019 Ford Mustang transmission problems

Filed Sep 14, 2026 · Engine, Transmission · AZ

Head gasket blew, and car overheated immediately on the freeway, with no warning signs, and at only 43,000 miles when a failure like this should not occur. Had to find a place to pull over and be towed to avoid more engine damage. Both independent mechanic and Ford dealership has confirmed this. Official diagnosis is "Remove and replace cylinder head assembly and replace head gasket – coolant intrusion cylinder 1, P0316, P0301.” Apparently it's a known issue with this particular engine and has a pending lawsuit.

Filed Aug 18, 2026 · Engine, Transmission · TX

My 2019 Ford Mustang equipped with the 2.3L EcoBoost engine developed a check-engine light, rough startups, engine misfires/rough running, and some engine knocking. The vehicle had approximately 87,453 miles. I took the vehicle to an authorized Ford dealership for diagnosis. The dealer brought the engine to operating temperature, pressurized the cooling system to 21 PSI, removed the ignition coils and spark plugs, and inspected the cylinders with a borescope. The dealer documented coolant intrusion into cylinder #2 due to a failed cylinder head and recommended replacement of the complete long-block engine due to the extent of the damage. The dealer also documented diagnostic trouble codes P0300 and P0316 for misfires, along with P008A and P018C related to low-side fuel pressure. I am concerned that internal coolant intrusion causing misfires, rough operation and engine knocking could result in significant loss of engine power or engine failure while driving, creating a safety hazard, particularly at highway speeds or in traffic. Ford Customer Relations was notified but declined financial assistance because the vehicle is outside the factory warranty and stated that there is no applicable recall for my vehicle. The vehicle has not been repaired and is available for inspection. The Ford dealership's written diagnostic report and photographs of the cylinder inspection are available.

Filed May 8, 2026 · Transmission · IN

Rebuilt transmissions are bad. Two in the last four weeks have been placed in my 2019 California Special Edition Mustang, and both are bad. They both came from the Ford manufacturer. The transmission locks up at any point while driving at any speed, causing the car to jerk to a standstill, and only while you are driving. We were on 465, and the car automatically stopped in the middle of the highway while other vehicles were flying by and behind me. We were almost hit by several vehicles. This also occurred while the mechanic test drove the car with the second rebuilt transmission placed in my car. No warnings, nothing before this occurred. This is a huge safety hazard and risk for many. The dealership is aware and advised me to contact Ford Motor Company and not to drive my car until something can be done. I have contacted Ford Motor Company, and they have yet to do anything or reach back out to me regarding this safety issue. The car is available for inspection at any time needed since it is still sitting at the dealership with the second rebuilt transmission in it that is no good.

Filed May 5, 2026 · Transmission · FL

My 2019 Ford Mustang Ecoboost Premium Fastback is having an issue with the transmission. When I shift from park to reverse or from reverse to drive, the car makes a clunking noise. There are times when i do a doubletake in my rear view mirror to see if someone has hit me in the back, this happens sometimes when i shift into reverse. Also, I have to stay back at least a car length behind vehicles as the car will sometimes lunges forward which can cause an accident. Will be taking my vehicle into service for this problem.

Filed Jan 30, 2026 · Engine, Transmission · CA

The component that failed on my ecoboost mustang 2019 was a failed design in the motor called the head gasket. The head gaskets broke and started leaking coolant into the engine. The engine has 39,000 miles

Filed Oct 23, 2025 · Transmission · WA

Since this recall came out I have taken my car to the dealer(Port Orchard Ford, Port Orchard, Wa. 98366) and each time they say they can't do it because it has a super charger. I think it's because they would have to reinstall the super charger program. I've been told that they would be able to reprogram it because they installed it. On the recall notice it doesn't list any exceptions to not doing the recall. XXX XXX REf. Manufacturer Recall Number 22S37 the federal safety agency Recall Number 22V382 Dated: May 27, 2022

Filed Jul 31, 2025 · Engine, Transmission · CA

My vehicle experienced a blown head gasket due to a faulty engine block design at 56K miles. The car started running rough for 10 seconds upon a cold start up and was also misfiring. This is due to coolant intrusion through the gasket and it got into cylinder 3 which could have caused catastrophic engine failure or worse.There are several class-action lawsuits against Ford for the defect.Ford has not taken any steps to address this issue with the ecoboost engines on 2015-2019 models. Additionally, Ford did NOT provide relief to me and I had to pay out of pocket to fix this.

Filed Jul 10, 2025 · Engine, Transmission · CA

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.

Filed Jun 25, 2025 · Transmission · CA

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.

Filed Jun 11, 2025 · Transmission · TX

Coolant leaked into my engine cylinder blowing my head gasket . This is due to poor design from Ford. The cost to replace the engine is about $12,000