2018 Lincoln MKC engine problems

Filed Nov 1, 2026 · Engine · PA

10/26/26, took vehicle in for service due to a rough start. Was notified by phone the vehicle was diagnosed with the engine coolant intrusion and was found to have low coolant. The vehicle had just been inspected the week prior and all levels were acceptable. Engine needed to be replaced. Just under 68000mi. This known engine issue/documented defect needs addressed and at minimum, customer notified BEFORE it happens to them.

Filed Oct 29, 2026 · Engine · 70,000 miles · FL

The contact owns a 2018 Lincoln MKC. The contact called on behalf of his wife who stated while driving at an undisclosed speed, the vehicle stalled. The vehicle was towed to an independent mechanic where it was diagnosed that there was an eco boost coolant intrusion and that the spark plugs and coils needed to be replaced. The vehicle was repaired however, the failure persisted, and the check engine warning light was illuminated. The vehicle was taken back to the independent mechanic where it was diagnosed that there was a blown head gasket that needed to be replaced. The failure mileage was approximately 70,000.

Filed Oct 7, 2026 · Engine, Transmission · FL

Rough idle at start up persisted as I got onto the road and caused near complete loss of drivability as "check engine" light appeared for the first time. Had towed to mechanic who replaced coils and plugs. One month later, check engine light appeared again. Brought back to mechanic who looked it over and said it was fine. Two weeks later, third apperance of check engine light. This time, I took to Lincoln dealership who ran appropriate diagnostics and confirmed one week later this is the coolant intrusion defect that will require a long-block engine replacement for $12,500. Car has 55,000 miles.

Filed Sep 18, 2026 · Engine · CA

Engine has a known defect causing coolant to leak into cylinders. Car is not safe to drive as car can overheat, blow gasket, loose power, catch fire while operating.

Filed Sep 16, 2026 · Engine · 73,617 miles · IL

The contact owns a 2018 Lincoln MKC. The contact stated that upon attempting to start the vehicle, the engine misfired. The dealer was notified of the failure. The vehicle was taken to the dealer, where it was diagnosed that coolant intrusion had resulted in the engine failure, and it was determined that the engine needed to be replaced. The manufacturer was notified of the failure by phone. The failure mileage was approximately 73,617.

Filed Sep 11, 2026 · Engine · NC

I own a 2018 Lincoln MKC equipped with the 2.0L EcoBoost engine. The vehicle currently has approximately 72,326 miles. The check-engine light initially illuminated and an OBD scan produced code P0303, indicating a misfire in Cylinder 3. No other diagnostic codes were reported. Following mechanical evaluation, all four spark plugs and ignition coils were replaced. Approximately 145 miles later, the check-engine light returned with the same P0303 code. The code was cleared to confirm recurrence, and approximately 111 miles later the check-engine light illuminated again. I subsequently took the vehicle to a Ford/Lincoln dealership for further diagnosis. The dealership determined that coolant is leaking into Cylinder 3 and advised that the required repair is replacement of the engine/long-block assembly, at an estimated cost of approximately $8,900. I have since learned that Ford issued Technical Service Bulletin 19-2346 addressing certain 2017–2019 Lincoln MKC vehicles equipped with the 2.0L EcoBoost engine that may exhibit coolant intrusion into the cylinders, an illuminated malfunction indicator lamp, and misfire diagnostic codes including P0303. The prescribed repair under the bulletin may require replacement of the long-block engine assembly. A search of the federal safety agency's recall database using my VIN does not presently identify my vehicle as subject to a safety recall for this coolant-intrusion condition. I am submitting this complaint so that the federal safety agency has a record of another 2018 Lincoln MKC 2.0L EcoBoost experiencing a dealer-confirmed coolant-intrusion failure consistent with Ford's published technical guidance. I am particularly concerned about whether this failure mode has safety implications and whether the population of potentially affected vehicles has been adequately identified. The vehicle had not exhibited significant drivability problems, rough cold starts, or other obvious warning symptoms before the recurring P0303 check-engine indication.

Filed Sep 1, 2026 · Engine · NM

My engine failed. At the time I did not know this. I was driving to work, and although I knew I was not out of gas according to the gas gauge, I thought maybe something was wrong with the gauge when my Lincoln began to putter like when you are running out of gas. I was approaching a stop light in the left turn lane when the car died. Which could have caused a multi car pileup considering the intersection in my town I was at. I got the car to start again but it smelt terrible and started smoking from the exhaust. A white smoke. I was not far from work at all so I made it there and had a mobile mechanic come to look at it. Upon inspecting it, he found oil build up in my spark plugs. When he tested the compression there was no compression at all in cylinder 4. There were no prior indicators such as check engine lights or any other lights. I had just financed this vehicle not even 6 months prior so not only did being stuck at a busy intersection full of anxiety and praying no one hit me, it has caused tremendous financial hardship as I have still been faithfully making my loan payments and paying full coverage on the vehicle. And has left my husband and I without a vehicle. He works 50 minutes from where we live and I work 20mins from where we live and in opposite directions. I since found out there are class action lawsuits for this year,make,model, and engine. I contacted the only shop in my town which is a Ford Lincoln dealership about the issues and was informed that most likely the cost of repairs/replacement would be $10,000 and to contact Ford corporate. Which I did and was denied any sort of assistance with cost when they should have to cover the whole thing as it is a major safety issue. Let alone the financial burden their defective engines are placing on people such as myself. This could have caused a major car accident potentially resulting in severe injuries to myself and others. I did not know until now I could report these types of safety issues.

Filed Aug 3, 2026 · Engine · SC

I am experiencing a coolant-intrusion problem with my 2018 Lincoln MKC, equipped with a 2.0L EcoBoost engine. The vehicle has only 63,900 miles. •The check-engine light repeatedly came on and went off over a two-week period. •A Lincoln dealer performed a diagnostic evaluation and identified the same problem reported in other Ford and Lincoln vehicles with this engine. •An independent automotive service provider confirmed the diagnosis and advised me that Ford had issued a service bulletin addressing this exact issue. •Both assessments indicated that the engine needs to be replaced. When I asked the dealer what could happen if I did not replace the engine, I was warned of serious safety risks, including a possible fire or complete engine failure. This is not a routine wear-and-tear issue; it appears to be a known design defect. The problem has reportedly led to class-action lawsuits and has left many vehicle owners facing significant repair costs without financial assistance. Ford/Lincoln has stated that it will not cover the cost of replacing my engine because the vehicle is no longer under warranty.

Filed Jul 31, 2026 · Engine · 37,500 miles · CA

The contact owns a 2018 Lincoln MKC. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to a dealer where it was diagnosed and determined that there was coolant leaking into the engine, causing a misfire. The contact was informed that the long block needed to be replaced. The dealer informed the contact not to drive the vehicle out of town and stated that the vehicle might stall while driving. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 37,500.

Filed Jul 3, 2026 · Engine · MD

I am thoroughly disappointed and overwhelmed. My vehicle has 122,000 miles on it. Yes that may be considered many for some but this vehicle has been taken care of extensively and all routine scheduled maintenance has been performed. I purchased from Preston Ford in Pittsville, MD and the vehicle had 48000 miles as a used vehicle. I have had many minor issues,(fuel flap), A/C issues and 2 recalls for back up camera and the vehicle had a recall stating the car may catch on fire so don't park near other structures. Supposedly both recalls were taken care of by the seller of my vehicle. Now I am told I need a new engine, my engine light came on and I thought it was the purge valve assembly. Now this is my first Ford product so I am sad to report this. I still owe on this car and was told a new engine would cost about 10,000. I use the car for work and is my livelihood. I do not know who to contact and would hate to see someone else with this same experience. I feel if you take care of your vehicle it should get more than 122,000 miles.