Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Ford Fusion owners, lightly cleaned up (personal details are redacted by NHTSA).
Year/Make/Model: 2015 Ford Fusion Engine Type: 1.5L EcoBoost 4-Cylinder Description of Safety Flaw and Incident: My vehicle is experiencing severe overheating and internal engine fluid loss due to the widely documented Ford EcoBoost coolant intrusion defect. The vehicle routinely runs hot, losing coolant rapidly with no external signs of a visible hose or radiator leak as well as failure of the brake lighting stop bumper and purge valve connecting to the gasline after fueling. This issue causes the vehicle to rapidly overheat while in motion, forcing sudden loss of engine power (limp mode) during highway driving. Car not properly cranking after fueling and brake light continuously being on even when brakes not being pressed. This unexpected drop in speed creates an immediate crash hazard for myself and surrounding traffic. …
The contact owns a 2015 Ford Fusion. The contact stated that upon starting the vehicle inside her garage, there was an abnormal smoke odor detected inside the vehicle. The contact drove out of the garage and turned off the vehicle. The contact opened the hood and the smoke dissipated. The contact restarted the vehicle and noticed that the check engine warning light was illuminated. The contact checked the coolant. The vehicle was taken to an independent mechanic who informed her that the coolant level was low. The mechanic added coolant. There was no indication of a coolant leak. The contact stated that while driving, the vehicle was blowing cold air. The contact checked the coolant level and noticed that the coolant level was low after a week. The contact added coolant. …
The contact owns a 2015 Ford Fusion. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. The contact pulled over on the side of the roadway and restarted the vehicle. The vehicle failed to accelerate above 30 MPH, with the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with coolant intrusion into cylinder #2, and the engine needed to be replaced. The vehicle was then taken to Fred Beans Ford (876 N Easton Rd, Doylestown, PA 18902) where it was diagnosed with coolant intrusion into the cylinders, and the engine needed to be replaced; however, the replacement part was on backorder. …
The contact owns a 2015 Ford Fusion. The contact stated that while driving at an undisclosed speed, the temperature gauge indicated that the engine was overheating. After a visual inspection of the engine compartment, the contact observed that the coolant reservoir was empty. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the coolant hose. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer, who determined that coolant was leaking into cylinders #2 and #3, resulting in damage to the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. …
The contact owns a 2015 Ford Fusion. The contact stated while driving approximately 25 MPH and making a left turn at an intersection, the vehicle stalled. The contact stated that the check engine warning light illuminated 10 minutes prior to the vehicle losing motive power and stalling. The contact placed the vehicle in park(P) and was able to restart the vehicle. The contact stated that the vehicle stalled again after driving for several miles. The contact stated that the failure recurred, and the vehicle was towed to an independent mechanic. The vehicle was diagnosed, and it was determined that engine failed the compression test on all four cylinders. Additionally, coolant was leaking into cylinder #1 and #2. The mechanic determined that the failure was related to TSB: 19-2139, NHTSA ID Number: 10168739 (Engine and Engine Cooling). The vehicle had not been repaired. …
The contact owns a 2015 Ford Fusion. The contact stated that after his daughter started the vehicle, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed that the spark plugs, and other unknown components needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The contact stated that while his daughter was driving at an undisclosed speed, the vehicle lost motive power. The vehicle was able to restart and was taken to another independent mechanic, where it was diagnosed that the head gasket needed to be replaced. The contact became aware of NHTSA Campaign Number: 17V209000 (Engine and Engine Cooling); however, the VIN was not included in the recall. The vehicle remained with the independent mechanic awaiting the repair. …
The contact owns a 2015 Ford Fusion. The contact stated while driving 40 MPH, the temperature gauge indicated that the engine was overheating, and the vehicle started losing motive power. The contact turned off the vehicle for three minutes and then immediately drove the vehicle to the local mechanic. The vehicle was taken to two independent mechanics. The first independent mechanic diagnosed the vehicle and determined that the head gasket had failed and needed to be replaced; however, the mechanic was unable to perform the repair. The vehicle was then towed to the second independent mechanic where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that there were no recalls on the VIN associated with the failure. …
The contact owns a 2015 Ford Fusion. The contact stated that while driving on a highway at unknown speeds, the vehicle lost motive power and stalled. The contact activated the hazard lights and veered to the side of the road. While the contact's wife was reversing, the vehicle began to drive roughly and stalled. Upon accelerating from a stop light, the vehicle stalled. The check engine warning light was illuminated. The contact's son inspected the vehicle and received codes for low fuel pressure. The vehicle was taken to an independent mechanic, who informed him that there was low fuel pressure and that the fuel pump and fuel sensor needed to be replaced. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The vehicle was not repaired. The manufacturer was contacted and opened a case and referred the contact to the NHTSA Hotline. …
The contact owns a 2015 Ford Fusion. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated with the temperature gauge indicated that the engine was hot(H). The contact later checked the coolant level and discovered that the coolant level was low; the coolant was topped off and the check engine warning light disappeared. The contact stated that while his wife was driving at an undisclosed speed, the check engine warning light illuminated. The contact's wife took the vehicle to an independent mechanic where it was determined that there was a misfire in cylinder #2. The dealer and the manufacturer were notified of the failure and informed the contact that there were no recalls on the VIN for the engine. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The vehicle was not repaired. …
The contact owns a 2015 Ford F-150. The contact stated that the engine was louder than usual, and the vehicle was running rough while driving at various speeds and idle. There were no warning lights illuminated. The vehicle was taken to the dealer and was diagnosed with low compression in cylinders #2 and #3 with a PSI of 801 in cylinders 1 and 4 with a PSI of 100. The dealer informed the contact that the deal PSI level was 145. The failure related to Technical Service Bulletin: 19/2375 - NHTSA ID Number: 10169884 (Engine and Engine Cooling) then referred the contact to the manufacturer to confirm inclusion. The dealer stated that the engine needed to be replaced. The vehicle had not been repaired. The manufacturer was informed of the failure and confirmed that the VIN was not included. The manufacturer referred the contact to the NHTSA Hotline to report the failure. …
Engine complaints in other Fusion years
Frequently asked questions
How common are engine problems on the 2015 Ford Fusion?
NHTSA has 311 complaints about the engine & cooling of the 2015 Ford Fusion, 31% of the model year's 997 complaints. The component named most often is exhaust system (2 mentions).
Is there a recall for 2015 Ford Fusion engine problems?
No. NHTSA lists no engine & cooling recall for the 2015 Ford Fusion, though it has 13 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 Ford Fusion engine problems start?
Half of the complaints with a recorded mileage happened before about 83,000 miles, and 6% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 0 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.