Owner-reported complaints naming the engine system, filed with NHTSA
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Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 2015 Ford Fusion submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 308 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
The 25 most recent of 308, in the owner's own words
I have a coolant intrusion into the engine and blew my engine in the middle of driving down the highway. No signs, no warning. Lost control, ended up on side of road. Had husband pull it the rest of the way home.
Engine warning display came on with "cylinder over temperature" immediately after temperature gauge went from normal (slightly under 1/2 way) to "Hot" immediately. Shut off engine - opened hood, coolant was noticed on passenger side just below coolant bottle. After waiting a little bit the tempature on the gauge hadn't dropped any & the radiator was cool to the touch. The day before washer fluid was added, while there the other levels were checked after sitting all night, the coolant was showing within the marked operating zone. Ended up calling for a tow truck.
I bought the 2015 ford fusion for my son as a graduation present as he headed off to college on his own. The car started misfiring upon cold start for about 5-10 seconds. Eventually the car started misfiring while driving. He frequently had to pull over on the side of the road while driving to make it to his destination. I had him take the car to a ford dealership to be inspected. To my surprise, Ford Parks of Wesley Chapel told me that the 2015 Ford Fusion 1.5L ecoboost has a known issue with coolant leaking into the engine causing misfiring and eventually engine failure. They offered no assistance in fixing the problem. They told me the cost to replace the engine was over 13,000.00.
The contact owns a 2015 Ford Fusion. The contact stated that the vehicle was experiencing excessive coolant consumption, causing the low coolant pressure warning light to illuminate prematurely. The vehicle was taken to an independent mechanic, where it was diagnosed with coolant intrusion in the combustion. The contact was informed that the head gasket or the engine needed to be replaced immediately to prevent further issues. Additionally, the contact was informed that the failure was due to a faulty engine design. The vehicle was not yet repaired. The manufacturer was notified of the failure and informed the contact that although the model year was affected, the vehicle was not covered. The failure mileage was approximately 91,000.
I own a 2015 Ford Fusion SE. I bought it used when it only had 47,000 miles on it. Over the course of time since buying it in DEC 2022 until now, it has had low coolant that I have had to address but no visible leaks. Current mileage now is 87,100 and just recently the coolant was low again and the check engine light came on for DTC P0301 -Cylinder 1 misfiring. It has had rough start ups, rough idle, decreased acceleration, and poor fuel efficiency. I have found the problem to be Coolant Intrusion – Engine Defect Concern “Coolant intrusion” is a known engine design defect in which coolant leaks into the cylinders, leading to internal damage, misfires, and eventual engine failure. After researching it I found that many other people have had the very same issue with no help from Ford. This should be a recall as this is an internal issue with the short block and something that should have been disclosed before purchasing this model/engine. The only repair that will fix the core of the issue is replacing the entire short block which costs thousands of dollars, way more than the cost of the entire vehicle at this point. Without fixing the issue, the engine will fail. Again, this should be something Ford should pay to repair, not any customer who came into this blind.
While driving at 30MPH, vehicle lost power without any notice/warnings. Had the vehicle towed to dealer who misdiagnosed as transmission problem (quoted $8000 to swap). Had a second opinion and indeed it was the dreaded coolant intrusion in the engine, catalytic convertor which cause the loss of acceleration and the transmission was completely fine. This is a ridiculously common issue with the 1.5L engine and Ford has not offered any support other than "oh well" mentality. Prior to this, car lost coolant, I had to top it off every couple days, blew with smoke, sweet smell, all in line with coolant intrusion. Had the lines checked and repaired as recommended but about 6 months later this happened.
Coolant Intrusion in the Block Led to white smoke coming out of the exhaust thick enough that I couldn't see as I tried to back out of the road.
Was driving g on the freeway and car began shaking about 1mile later rhe car would not go past 10 miles an hr without making a loud noise everything was upkept with my car ontop of all recalls and now I have a car that I had to finish paying off without being able to drive it for almost 2 years and can't seem to fund a solution on either the dealer fixing the power train or giving me a refund
On 2/4/26, I experienced a slight skip while driving, But did not continue. The very next morning while in reverse, A winding sound started. Put car in drive pulled out onto main road, drove fine, not even half a mile. Stopped at sign, pulled out onto main road a main road, and car would not go, would not go in gear at all. No one was hurt, but received a few horn honks. Made it to side of road, put the car in sport/manual mode, did not help. Manage to make it about a mile up the road where I was able to safely park it in a parking lot. The check engine symbol came on a couple of weeks prior, but went away after a day. Did not come back on until this particular day 2/5/26. Nothing, no problems leading up to this. Conveniently the extended warranty went out on car 4k miles ago! And the dealership is not interested in helping me out at all. I had to have it towed to an independent shop, to get checked out, due to the dealership being booked 2 months out! I now have a car that I have only had for 1 year! With a blown transmission that I have to make payments on and can not drive!! There are no recalls, but there is a manufacturer issue, that we do not get notified about by mail or by email..? I read another complaint about this same thing, guy also making payments on a car he can not drive!!! This is ridiculous!! And heartbreaking if I can not get help with this! And you can bet the dealership will receive a less than favorable review!
My 2015 Ford fusion 1.5 L engine has had problems since 2022. I have been adding antifreeze, changed spark plugs many times, flushed my antifreeze and the vehicle overheats and has had to be towed twice changed out thermostat, spark plugs, coil pack, two times for misfiring coolant housing with no success. Called in a complaint to Ford Motor Co. and they are unwilling to help. They said they put out a bulletin however this does not fix the problem of needing a new engine. I am stuck making payments on a car I cannot drive. My mechanic says it needs a new engine. Never realizing there was a bulletin or a coolant intrusion problem with this engine.
Car began leaking coolant, overheating, smoking (white smoke) and misfiring on cylinder #3. Based on my research, this is an issue Ford knows about due to it being a defect in the design, yet I'm being told I have to pay to replace the engine. We replaced the spark plugs, coils, and nothing helped. We took it to a mechanic and were told we need an entire engine replacement and it won't be covered by Ford.
I have been having issues with the vehicle where it will stall. This even happened when I was driving on the NJ turnpike, it stalled while driving and I had to pull over (thankfully I could) to restart the vehicle. It took the dealer 3 weeks to finally figure out the issue and tracked it down to a bad BCM (Body Control Module). I researched this further and found some interesting information. A significant number of 2015 Fusion owners report similar electrical glitches, with some experiencing a complete loss of power to multiple systems, including the center console, AC, and power windows. Diagnostics have identified water intrusion and corrosion in specific connectors, such as C134 near the front bumper, as a root cause, which can be resolved by cleaning and applying electric grease. However, a failing BCM itself is a common diagnosis, especially when multiple systems fail simultaneously and no other obvious cause is found. Replacing the BCM is a known solution, but it requires programming with the vehicle's specific as-built information and PATS key programming to function correctly; a new OEM BCM typically costs around $500. The BCM must be programmed using specialized diagnostic tools like Ford IDS software or equivalent, and the process includes steps like parameter reset, CEI configuration, and battery monitor sensor reset. While some owners have successfully bypassed the BCM using an external relay for specific functions like parking lights, this is a complex workaround and not a standard fix for a failing BCM. Persistent issues, especially those that recur after resets or component replacements, often point to a defective BCM, though other factors like a faulty wiring harness or a bad ground connection should also be ruled out. Given the prevalence of these problems across 2010–2019 Ford Fusions, some owners have advocated for a recall, citing safety concerns.
I got an engine temperature warning, then I noticed the coolant reservoir was empty. I filled it back up and everything went back to normal. I was driving down the interstate when the check engine light came on. I had a few misfires and was able to make it back to a dealership, who then diagnosed the vehicle and said it coolant intrusion due to an engine block leak. Charging over $9000 in repairs
I have a 2015 Ford Fusion Ecoboost t back in 2019 took it to Ford for regular maintenance and they told me it had a recall for another engine (coolant intrusion) at that time I had no problem with my car so needless to say I was shocked . Now 2026 August 15 my car shuts down coolant temperature warning comes on , I pulled over had a mechanic look at it and he tells me the head gasket is no good coolant intrusion This is a safety issue and cars could catch on fire 🔥 Called Ford they said nothing they can do . All I can say is shame on Ford they need to do the right thing and fix these Safety issues.
The contact owns a 2015 Ford Fusion. The contact stated while driving at various speeds, the engine overheating warning light illuminated. The contact stopped the vehicle, and the vehicle was towed to an independent mechanic. The vehicle was diagnosed, and it was determined that an engine sensor had failed and needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The contact stated that the failure reoccurred 2 more times. The contact stated that during recent failure, there was a misfire coming from the engine and the engine was idling rough. The vehicle was driven to the same mechanic, who diagnosed the vehicle and determined that there was coolant intrusion into the engine block, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 175,000.
The contact owns a 2015 Ford Fusion. The contact stated while starting the vehicle, the check engine warning light remained illuminated, and the vehicle failed to immediately start. The vehicle was taken to the local mechanic who diagnosed and determined there was coolant inside the cylinders and informed the contact that the engine long block needed to be replaced. The vehicle was not repaired. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The failure mileage was 100,000.
The contact owns a 2015 Ford Fusion. The contact stated while driving 70-75 MPH on the interstate, the vehicle stalled. There was no warning light illuminated. The contact was able to pull over and restarted the vehicle. The message "Transmission Not in Park" was displayed. The contact stated that while veering to the left lane, the vehicle started to shudder. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacture was not made aware of the failure. The failure mileage was approximately 216,700.
Coolant leaking into cylinder 2, misfire (P0302), overheating, and white smoke from exhaust. Mechanic diagnosed potential head gasket or coolant intrusion issue. Vehicle is out of warranty. This seems related to known issues on EcoBoost engines, including TSB 19-2208 for later models, but no recall exists for the 2015 model. Major safety concern and potential engine failure
We purchased a used car for my son to use in college. While driving on the hwy, the car started loosing power and just died on the side of the road. He was towed towed to a Ford dealer and was told he was leaking coolant into cylinder #4, which is a KNOWN PROBLEM AT FORD and an active recall for model years 2016-2018. Our 2015 has the identical failure mode and is not covered in the recall!! We were told $9000 to replace the engine block ... It only has 84,000 miles on it!!!!
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 was referred to the NHTSA Hotline for assistance. The failure mileage was 144,000.
I was driving on the highway in my car stop going then it start rolling backwards a little then i hit the breaks then put in park in put it back in drive then it started driving again then my brake lights came on and didn’t go off for about a week I have to unhook the battery I have a 8 year old son I was on the way to the hospital because my grand father was on life support when all this took place there was trucks going around us we almost got hit my three car thank god I made it home safe then I got. Home in my car just keep getting load as if I’m hitting the car there’s a load sound it makes when I start it up in i dont feel safe driving it … when out it being check out i really need some one to look at it
The vehicle started to over heat because the vehicle is loosing antifreeze through the head/engine block wall. This is a 1.5L Ecoboost motor. I had the water pump and radiator lines replaced 2022 by Gorilla Techs, but that did not fix the issue. It has progressively gotten worse over the course of two years. Other Ford owners, they have had engine repairs covered. However, the recommend solution is to replace the engine with a long block engine. This repair is a result of poor engineering. A new engine from Ford is priced at $6,000 and does not include labor or other one time use parts and fluids.
My 2015 Ford Fusion with the 1.5L EcoBoost engine experienced a complete engine failure due to a coolant intrusion in cylinder 3, which is consistent with Ford TSB 20-2100. In December 2023, I brought the car to the dealership due to rough starting and a non-start issue. No coolant related codes were detected at the time. In May 2025, the vehicle began running roughly and showed codes PO316 and PO303. The dealership diagnosed low coolant and coolant intrusion into cylinder 3, with a rust and fouled spark plug. I believe this is a progressively safety-related engine defect that can lead to sudden loss of power and unsafe driving conditions.
I only have 85k miles on my 2015 Ford Fusion. One day the check engine light came on, my car started stalling, shaking, and making noise. I stopped the car and checked the engine- coolant was exhausted. Upon taking to get it checked- the head gasket and short block were blown/cracked. The coolant had leaked into the engine. This should not have happened on a car with this low of mileage. I did my research and this is a well known issue for Ford Fusions during this time range. I called Ford and they told me there is nothing that they could do.
Coolant Intrusion in Cylinder 2 and 3.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
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