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.

- Torrance, CA, USA

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.

- Fleming Island, FL, USA

UNKNOWN, suddenly needs a new transmission. very upsetting

- Littleton, CO, USA

I was driving and the vehicle jerked, the check engine came on and I immediately pulled over. The car was towed to a local mechanic who said take it to ford because this is a known issue with 6 cylinder engines. Today, ford called and said it-??s a catastrophic engine failure and nothing I did. The cost to replace the engine is $10,000. My car had 97,000 miles and was always well cared for. If ford knows this is an issue, it should be a recall.

- Johns Creek, GA, USA

The contact owns a 2017 Ford Mustang. The contact stated while driving at an undisclosed speed, the vehicle was jerking with the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that cylinder #1 had misfired and that the long block needed to be replaced. The vehicle was not repaired. The contact stated that the spark plugs, and ignition coils had previously been replaced. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 88,000.

- Bartlett, IL, USA

The contact owns a 2017 Ford Mustang. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power while driving sluggishly. The check engine warning light was illuminated. The vehicle was taken to the dealer, who determined an increased bore size for cylinder #2, which was allowing an abnormal amount of coolant to flow into the engine. The vehicle was not repaired. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 101,000.

- Humble, TX, USA

June 2022, approx. 53000 miles, misfire codes. Replaced spark plugs. Codes continued intermittently. January 2023 car was inspected due to heater inop at 61228 miles. Coolant low and misfires. No repairs, just coolant added. I topped off coolant 3X until April of 2023 at 61631 miles, white smoke and damp smell from exhaust along with continuing misfires. Dealer stated water intrusion, engine and turbo bad. No warranty, less than 50% of cost covered by manufacturer. June 2023 car was returned to me. Back at dealer 4 days later, 61691 miles, rear end shudder. Bad rear differential. Manufacturer covered less than 50% of cost. All maintenance was performed at or earlier than warranty required including rear differential service at 33283 miles with Ford.

- San Leandro, CA, USA

I was driving at 60mph when the transmission automatically downshifted to second gear while all sport modes were OFF and T/C was ON. Car was simply on drive, and after merging onto freeway and had completely let go of the accelerator pedal the car downshifted by itself no down shifting was done by the paddles. This is the 4th time my car does this and I have to upshift as fast as possible because RPMs go up as high at 7000. i-??ve made some reading and looked at some TSBs looks like this issue has happened to other owners who their vehicle is equipped with the 6R80 transmission.

- San Mateo, CA, USA

Car leaking Freon for years causing black mold throughout the car and directly in my face for years. It-??s otorless but does smell musky like black mold the technician said. Repair shop stated Freon leak but can-??t locate it resulting in me losing my job from being too sick to work from black mold overgrowth in my body from this car. My son and I have brain fog, digestion issues, clumsy, sinus and throat always has mucus, fatigue and overall feeling of being unwell. This has caused my now 4 year old son and I to be in and out of the hospital for about 2 years but the last year was really bad. Ford is not acknowledging this is a problem however I found a TSB listed online. Please help me get this car fixed or help me get out of this car as it is killing us resulting in poor quality of life and life long health issues that affect our lives every day. NHTSA ID Number: 10144920 Manufacturer Communication Number: TSB 18-2256

- Santa Rosa, CA, USA

My mustang with approximately 41,000 miles now needs a NEW engine ($8,100) because of these known issues with these EcoBoost engines. How come they are allowed to sell lemons to the American people??

- Atlanta, GA, USA

The contact owns a 2017 Ford Mustang. The contact stated that while driving at various speeds, the vehicle intermittently experienced surging, hesitation, and a loss of motive power. On one occasion while driving at an undisclosed speed, the vehicle stalled and was towed to the local dealer who diagnosed that the air compressor and battery had failed, causing two engine belts to malfunction. No further information was available. The vehicle was repaired however, the failure persisted. The manufacturer was notified of the failure but no assistance was offered. The failure mileage was 13,000.

- Staten Island, NY, USA

There is oil leak from valve cover gasket and S550 ecoboost Mustang and dealership would not even repair the car under warranty unless its a running oil leak. There is multiple post of this situation.

- Wheeling, IL, USA

The contact owns a 2017 Ford Mustang. After the vehicle was fueled, it stalled when stopped at a stop sign or red light. In addition, the check engine indicator illuminated. The vehicle was taken to an independent mechanic where the contact was informed that the purge valve needed to be replaced. Tallahassee Ford Lincoln (243 N magnolia dr, tallahassee, fl 32301, (850) 877-1171) was called and the contact was waiting for a call back. The vehicle was not taken to a dealer for diagnostic testing or repairs. The manufacturer was made aware of the failure and informed the contact that the VIN was not included in a recall. The failure mileage was 55,000.

- Tallahassee, FL, USA

2017 Ford Mustang GT premium with less than 20K miles while driving stalled and engine caught fire. No prior warnings, smells or leaks on the garage floor. I have the fire report and all other documents but couldn't get them to upload.

- Friendswood, TX, USA

Driving on a flat road then drive up a hill it takes longer to go into gear. Takes longer to shift. Loss of power

- San Diego, CA, USA

My vehicle, manufactured June 2016, is having an oil leak from the engine cooler hose. My specific VIN was not recalled but this issue started last week and falls under both model year and manufactur dates for this recall Ford # (16S40). This occurs after vehicle operation on any street, typically after the vehicle comes to a stop at a light or the vehicle is parked, smoke with the odor of burnt oil emits from the driver side of the engine bay.

- Nesconset, NY, USA

Engine rod bearing are defective or improperly installed. Experiencing rod bearing play, which causes a lower engine tapping sound during acceleration. Original engine experienced the tapping at 1,600 miles, and replacement engine experienced it at 300 miles. Pending 3rd engine replacement.

- Mesa, AZ, USA

Car started leaking oil at 2,800 miles, being repaired at dealership

- Westlake, OH, USA

My 2017 Ford Mustang GT with only 3000 miles on it has almost to no coolant in it it's been a garage kept car hasn't even seen a track or driving it hard!! I have never owned a new car that just lost coolant like that. The reason I'm reporting this is I seriously think this is a very wide spread problem with all Ford lineup for all I know 2017 year my sister owns the 2017 Ford escape with only 10,000 miles on it her car was the first to have this problem we call Ford they say bring it in but they won't be able to even look at until July of next month because they have so many in the shop with cooling issues. She's stuck with a rental for over a month they didn't even want to offer her one! how can someone not have a car for over a month and still have a job?? but back to my car as of today 06/18/2018 my Mustang had the same freaking problem now so here we are paying over $800 in car payments just to be [xxx] without two cars for months I think this unacceptable and would greatly appreciate it if you all could maybe look into this I honestly think this is a massive recall that should be aware of especially living in Texas where it gets 100+ degrees we drive mostly on a highway everyday might be when in motion not too sure yet. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Fort Worth, TX, USA

The contact owns a 2017 Ford Mustang. The contact received notification of NHTSA campaign number: 16V779000 (engine and engine cooling); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available. Updated 01/26/17

- Basking Ridge, NJ, USA