2018 Lincoln MKC Engine Problems

The check engine light came on and car started to over heat when taken into shop was told need to replace entire engine this is a known issue in these make / model cars with these engines and it is not being addressed

The check engine light came on and it would run rough when started. It was determined the number four cylinder head was cracked, allowing antifreeze to leak into the engine block. I bought the car new in January 2019. The problem appeared with under 57,000 actual miles. The car has always been serviced on time at the dealership. The cost to fix the problem with a new engine is approximately $10,000. I bought the car new so that I would not have problems. It is my only form of transportation. In researching, I have found this is a reoccurring problem on the echo boost four-cylinder engine since 2017. It didn’t matter whether it was low mileage or high mileage the cracks would appear. There had been a recall on later models, but no recall for the 2018. I believe it should be under recall.

Coolant intrusion in engine

Car had engine light come on, was told from dealer need completely new engine despite only 70k miles. Is a known issue, please protect US consumers.

Check engine light came on. The engine has coolant intrusion and the engine would have to be replaced, quoted me $17,240.83 I called [XXX] Lincoln client relationship center and I was told there was nothing they can do to help me. After doing some research, this has been a known problem by Lincoln and they have not put out any recalls. They also have a class action lawsuit against them INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am writing regarding my 2018 Lincoln MKC, VIN # [XXX] which is experiencing clear symptoms of coolant intrusion into the cylinders. These include low coolant levels, white exhaust smoke, engine misfires, and a rough-running condition. According to **Technical Service Bulletin 19‑2346** (NHTSA ID 10169807, dated December 20, 2019), this issue is a known defect affecting MKC models with the 2.0L EcoBoost engine and recommends replacement of the long‑block assembly to correct the problem. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I have a 2018 Lincoln MKC with the well known coolant intrusion complete engine failure. I need a new long block at a cost of 9500 dollars. I had no warning light or check engine light to warn me about this issue prior to taking it to Ford dealer in Buellton to ask why coolant was emptying so fast. I had previously taken it to Lincoln dealer while under warranty and was told no issues. Even though they had a specific service bulletin stating the problems I was having. I feel my safety was at risk because I drive alone into sketchy areas for my job and my car could have just stopped and I would be an elderly woman alone with a broken down car waiting for a tow. It also could have possibly caught on fire I’m told. Lincoln Concierge was no help. Said it was VIN specific and not enough vehicles affected to warrant a recall. Mechanic at Ford says 3 to 4 vehicles a month are being repaired at his shop and they are a rural dealership. I think we are all being fleeced. We spent 40000 plus for a luxury reliable vehicle. We still have car payments. Can’t use as trade in. Can’t afford to buy another car. I can’t do my job. The stress alone may be dangerous for my health. Pending lawsuit won’t begin until June of 2026. This is so wrong

Coolant is leaking into the cylinders and could cause the engine to seize while driving. The issue was identified at a Ford dealership and is a known issue on this engine and has been admitted by Ford/Lincoln as a problem. The only warning was a check engine light which appeared after the problem existed and only fix is to replace the engine. Ford/Lincoln did not make any attempts to notify owners in advance of this issue so it could be checked. There are still many of these engines on the road which could seize at any time and cause tragic results.

Dealer service technician states the a crack in the engine block is allowing coolant to enter the cylinder causing misfiring. This appears to require engine replacement with only 59000 miles on the vehicle. This is a common problem with the 2018 engine and could result in a fire.

Check engine light came on at approx 54,000 miles with code of cylinder 2 misfire diagnosed as spark plugs and ignition coils need replaced. All spark plugs and ignition coils replaced May 11. June 23 check engine light on again with cylinder 2 misfire. Was told spark plugs and ignition coils need replaced again. July 9 spark plugs and ignitiion coils replaced. July 10 check engine light came on cylinder 2 misfire. July 11 car was diagnosed as needing engine replacement due to coolant intrusion causing rust in engine

I have a 2018 Lincoln MKC with approximately 58,000 miles, always taken care of and maintained, in excellent condition. Almost immediately after my extended warranty ran out the check engine light came on and it started to start and idle rough. Took it to a Lincoln dealer, they replaced coil assembly # 4 and the 4 spark plugs, told me if it continues there might be coolant intrusion to the engine and the engine would need to be replaced. Check engine light came on 2 days later again, back to the dealership where they told me there was coolant intrusion and the engine will need to replaced. $8020.00 estimate, Lincoln/Ford is aware of this defect in this engine, they should recall this engine and replace it.

2018 Lincoln MKC with 112,700 miles hesitating with accelerating. There have been no check engine lights activated. Took to Ford dealership for inspection and they found coolant level low and confirmed shuddering/jerking when accelerating. Found that cylinder 1 misfiring and upon further inspection found coolant intrusion in cylinder 1. Recommended long block replacement. I found that this year model with Ford Ecoboost 2L engine has had frequent issues with the coolant leaking into cylinders due to poor design of this engine. Contacted Ford and asked for help with the cost to replace the engine block and was denied any assistance.

Engine failure due to coolant leak. Causing vehicle to overheat without warning while traveling down highway Issue has been reported to service center No other inspection No warning indicated.

Loosing Coolant resulting in coolant leaking into the engine. White smoke coming from exhaust m. Repair garage states only fix is to replace with revised engine causing over $10,000 in repair costs.

The engine light has appeared approximately in April 2025. The inspection advised that the engine code indicated a misfire in cylinder 4. The engine rough idles when started. The coolant loss is extensive due to an engine issue and must be constantly filled.vwe were told by, iPaul's Repair shop, that upon calling Ford, that there was a Lincoln technical service bulletin re: the 2 liter eco boost engine. It was re coolant intrusion into the cylinders. Service bulletin # 19-2346. We have also replaced the spark plugs and coils. The engine light still came on with the same issue. It did not solve the problem of a DEFECTIVE ENGINE.

The contact owns a 2018 Lincoln MKC. The contact stated that when the vehicle was cold-started, the vehicle shuddered, shook abnormally, and idled roughly. The contact stated that the check engine warning light was illuminated. The contact stated that the vehicle was still running rough after the engine had reached normal operating temperatures. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that there was coolant intrusion into the cylinders, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 49,000.

The contact owns a 2018 Lincoln MKC. The contact stated that there was a misfire coming from the engine while starting the vehicle. While inspecting the vehicle, the coolant level was extremely low. The check engine warning light was illuminated. The vehicle was taken to a local dealer where the vehicle was diagnosed, and the contact was informed of coolant intrusion into the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 69,349.

The contact owned a 2018 Lincoln MKC. The contact stated while attempting to start the vehicle, the check engine warning light illuminated. A dealer was contacted. The vehicle was taken to a dealer where it was diagnosed coolant intrusion into the engine and that the engine needed to be replaced. The vehicle was repaired. The contact stated that the vehicle was traded. The manufacturer was notified of the failure, and informed the contact that the VIN was not under recall. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was 57,000.

It was almost time for an oil change when the check engine light came on. The engine was idling roughly when the car was first started. I decided to take the car in early for the oil change and to get them to check the check engine light that’s when they told me of the known problem with the cracked engine block, and the engine coolant leaking into the engine. I took the car to another place for a second opinion and the mechanic told me he had repaired five of these vehicles recently. In my research, I have found that Ford was aware of this problem with Ford vehicles and Lincoln vehicles, but has not offered a solution to the problem. I don’t find a recall notice or anything Ford is doing about this problem, except replacing the engine, as instructed by Ford and charging me full price for the replacement of the engine. I would not have purchased this vehicle had I known of this problem. This vehicle has had every scheduled maintenance performed by the Lincoln dealership except two oil changes that were done at a Ford dealership.

The contact owns a 2018 Lincoln MKC. The contact stated while the vehicle was parked, the contact attempted to start the vehicle however, the message "Engine Coolant Over Temperature" was displayed, and the check engine warning light was illuminated. The vehicle was towed to a dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The contact was referred to the NHTSA Hotline to report the failure. The failure mileage was 92,000.