2019 Ford Mustang engine problems

Filed Oct 28, 2026 · Engine · NC

A blank instrument cluster will not show important information like vehicle speed, fuel or temperature level, or safety system warnings. Gas pedal doesn't act and doesn't even effect the car's engine. And suddenly it catches up and jerks.

Filed Oct 21, 2026 · Engine · NJ

My 2019 ford mustang egoboost with only 59,000 miles has a cylinder three coolant intrusion. This is disappointing, as the only right way to fix this according to Ford, is to replace the whole engine. Nobody should expect to have to fix their entire engine. Now on cold starts coolant is leaking in to cylinder three, which is causing misfires and could potentially lead to a safety, risk. Ironically, there’s a lawsuit currently in place for this exact problem. This is a problem, sudden engine failure or stalling due to severe coolant intrusion introduces a dangerous loss of power while operating the vehicle at speed and could lead to a blown or locked up motor. Ford has kept this under wraps since the release of this generation of vehicle.

Filed Oct 13, 2026 · Engine · OK

Known engine coolant intrusion problem with the Ford EcoBoost engine. It misfires and was confirmed by a service center that a whole new engine was needed. Car shaking and rumbling-- gas smell. Afraid of it catching fire.

Filed Sep 22, 2026 · Engine · FL

Engine coolant leaked into the cylinders. Overheating. Coolant leaked into catalyst. ODB Error codes attached . Independent service center replaced short block, see attached invoice. Engine light on.

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 27, 2026 · Engine · 95,000 miles · WA

The contact owns a 2019 Ford Mustang. The contact stated that upon start the check engine warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed and the contact was advised that the engine was faulty due to coolant intrusion and that the engine would have to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 95,000.

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 Aug 13, 2026 · Engine · 124,000 miles · TN

The contact owns a 2019 Ford Mustang. The contact stated that while driving 40 MPH and depressing the accelerator pedal, the vehicle hesitated, causing the engine to overheat. The contact pulled over to the right side of the road and turned off the vehicle to allow the engine to cool down while waiting on a mechanic to arrive on the scene. An independent mechanic was contacted, and the vehicle was taken to Auto Zone to be diagnosed. The contact was informed that coolant had leaked into cylinders #2 and #3 before the failure occurred. The vehicle was towed to an independent mechanic to be diagnosed, and it was determined that the head gasket needed to be replaced. The vehicle was repaired, and the ignition coil packs and spark plugs were replaced; however, the failure persisted. The contact stated that the failure had occurred twice. The contact associated the failure with the federal safety agency Campaign Number: 25V828000 (ENGINE); however, the VIN was not included in the recall. The manufacturer was notified of the failure and referred the contact to the dealer for assistance. The approximate failure mileage was 124,000.

Filed Aug 11, 2026 · Engine · GA

2019 Ford Mustang with 3.2 EcoBoost engine has coolant intrusion into the engine thru a defectively made engine block. Diagnosed by the Ford dealer in Hinesville,GA on August 11,2026. Car has 52,731 miles on it and has always been maintained by the local Ford service department. Car is a daily driver, no abuse or rough driving. Car is available for inspection upon request Coolant intrusion can cause sudden engine failure, loss of power and sudden stoppage at any speed. Overheating due to loss of coolant, engine fire, loss of control of the car. Check engine light came on and engine ran rough on cold start up on [XXX] & i then took it in to be checked out by Ford service. Service advisor stated that this coolant intrusion is due to a Ford known defect in the EcoBoost engines; but that there has been no recall. Only solution he offered was to have a new replacement engine installed for about $13,500. I declined the replacement. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 18, 2026 · Engine · FL

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