2019 Ford Mustang Complaints

ENGINE — Filed 03/01/2026

Engine Failure where a replacement engine is required just after a few months of purchasing the vehicle.

ENGINE — Filed 05/28/2026

Coolant intrusion. This particular motor has caused NUMEROUS issues with 2019 & older Ford models, specifically with the 2.3L Ecoboost engines. The Ford Motor Company should recall & replace the engines of all models affected, mine included. I spent $2200 for a new timing system, tow fees, was broke down on the side of the road when my engine overheated. I bought this car brand new. Financed $27k & owe $3900 right now. Devastated & livid describes how I feel at the present. Coolant intrusion causing hydrolock is a KNOWN issue by Ford, and they should make things right with the owners of the vehicles affected. A new motor will cost $6500. That should NOT be a cost that the customer has to pay.

LATCHES/LOCKS/LINKAGES — Filed 05/16/2026

The contact owns a 2019 Ford Mustang. The contact stated that while driving at various speeds, the front driver's side door suddenly unlocked and became slightly ajar. The contact immediately opened and closed the door, and then securely locked the door. The contact became aware of information related to the locking mechanism; however, the contact was unable to locate the information. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the issue. The failure mileage was approximately 82,000.

ENGINE — Filed 05/30/2025

Left for work. Started running funny, stalled-started-stalled-started on my street. Got on highway about 1/2 mile, check engine light & engine temp light came on. Got off highway and called a tow to SARASOTA FORD. Tech ran diag. for codes, codes found.: P1285( cylinder head over temp ), P0316(engine misfire ), P0304( cylinder 4 misfire ), P0303(cylinder 3 misfire ), P0302( cylinder 2 misfire ), P217( engine coolant over temp ),.. Tech removed spark plugs and saw coolant in cylinder's ( 2,3,4 ) with a bore scope. Ongoing problem I found out about after the fact with the ( 2015-2019, 2.3L EcoBoost .. "ECO-BOOM" motor ). Specifically between cylinder's 2 & 3... Was quoted a repair cost of over $10,000.00 -12,000.00 dollars. It's been next to my house for almost a year now. Bought the car used in JANUARY 2021 with my son with no explanation of the known problem. If known I would not have bought the car, 2019/FORD/MUSTANG/2DR CPE ECOBOOST FASTBACK. Diagnostics were done on 06/04/2025 at ... Incident happened around 05/30-31/2025, That's about all I got

ENGINE AND ENGINE COOLING — Filed 03/13/2026

The contact owns a 2019 Ford Mustang. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed, however the vehicle failed to accelerate as intended. The vehicle's speed did not accelerate above 20 MPH. In addition, the check engine warning light illuminated. The vehicle was driven to the shoulder of the road. The vehicle was towed to the contact's residence. The vehicle was taken to an independent mechanic where it was diagnosed with coolant intrusion and a failed engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The vehicle was taken to the dealer where it was diagnosed with coolant intrusion and a failed engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 103,000.

POWER TRAIN — Filed 04/06/2026

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.

POWER TRAIN — Filed 12/01/2025

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.

ENGINE AND ENGINE COOLING — Filed 04/11/2026

The contact owns a 2019 Ford Mustang. The contact stated that it was difficult to start the vehicle. While driving at 30 MPH, there was a significant amount of white smoke coming out of the exhaust pipes, reducing the visibility of the rear of the vehicle. The contact was able to pull over to the side of the road. The vehicle was towed to the dealer, where it was diagnosed, and it was determined that the engine was blown. The dealer determined that the engine needed to be replaced. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 44,000.

ENGINE — Filed 04/11/2026

The car is using a lot of engine coolant and oil. It is also burning the spark plugs. The check engine light comes out 6k miles after I install new spark plugs and it starts shaking, misfiring, running poorly, not accelerating properly and blowing white smoke through the exhaust on cold start. I know the engines have a defect from factory that causes them to do this. It usually needs a new head gasket, block or engine. Please advise. I read a forum that referred me to this website. The car is well taken care of and has 115k miles.

ENGINE — Filed 03/16/2026

Description of the Defect: My 2019 Ford Mustang EcoBoost experienced a premature engine failure caused by internal coolant intrusion, resulting in the need for complete engine replacement. This failure is not related to routine maintenance or a head gasket issue, but rather a known internal engine design defect that allows coolant to intrude into the cylinders over time. The vehicle exhibited symptoms including coolant loss without visible external leaks, rough operation, and engine malfunction. Upon inspection by a Ford dealership, the failure was diagnosed as coolant intrusion into the engine, with the only repair option being long‑block (engine) replacement. Ford has acknowledged this failure mode in Technical Service Bulletin (TSB) 19‑2346, which documents coolant intrusion in EcoBoost engines and states that engine replacement—not head gasket repair—is the required corrective action. This bulletin confirms the issue is caused by an internal design flaw that develops over time. Why This Is a Safety Concern: This defect can lead to sudden engine misfires, loss of power, or complete engine failure while driving, which poses a serious safety risk to vehicle occupants and other road users. Engine failure at highway speeds or during normal driving conditions creates the potential for crashes, loss of vehicle control, or roadside breakdowns in unsafe conditions. The failure occurred at very low mileage (36,000 miles), indicating a premature and abnormal engine defect, not normal wear and tear. Yes, it is available for inspection upon request. Yes, it is diagnostic and confirmed by AutoNation Ford Bellevue [XXX] Direct line: [XXX] No, prior warning and symptoms. First appeared on March 16, 2026. No recall exists despite Ford’s TSBs acknowledging the defect. Ford later redesigned the EcoBoost engine, showing awareness of the issue, yet owners are forced to pay for costly engine replacements after warranty expiration. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)