2017 Lincoln MKC: misfire or rough idle

Filed Aug 9, 2026 · Engine · TX

For the last 17,000 miles, the engine light has been on. We got it checked out and there is coolant and cylinder three we change the cylinder thought it was a misfire, but the problem keeps occurring and we found out information that those engines are bad.

Filed Jul 25, 2026 · Engine · KS

Check Engine Light present. Took car to Ford dealership. Formal diagnosis from Ford dealership: Coolant intrusion present causing misfires, specifically in cylinder 4. P0304 and P0316 codes present. This is a known manufacturing issue; however, Lincoln customer service refuses to acknowledge the problem even exists. Upon talking to the Ford dealership service members, they stated that this is a common issue. One of the service members stated he has already dealt with multiple vehicles with this exact problem this week alone. Having an engine (misfire, steam, etc) go out due to a manufacturing/design flaw, especially while driving on the highway, is a major safety issue. Service team instructed me to no longer drive vehicle which would cause catastrophic damage.

Filed Jul 12, 2026 · Engine, Fuel system · MI

I am filing a formal safety complaint regarding my 2017 Lincoln MKC equipped with the 2.0L EcoBoost engine (VIN: [XXX]). The vehicle has experienced a severe, progressive engine failure caused by internal coolant intrusion into Cylinder 1, directly matching the structural design defect detailed by the manufacturer in Technical Service Bulletin TSB 22-2229. This defect allows pressurized engine coolant to continuously leak directly into the combustion cylinders while driving and during engine rest. This creates an immediate safety risk of vehicle hydro-locking during ignition, sudden mid-drive engine stalls at highway speeds due to severe misfires (Fault Code P0301), and unexpected engine overheating. The manufacturer has knowingly built these open-deck engine blocks with narrow coolant grooves prone to fracturing, creating an ongoing risk of sudden thermal failure and power loss in active traffic. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 1, 2026 · Engine · MD

Check engine Light P0302 Engine Misfire Cylinder 2. I noticed Low Coolant in the overflow tank. Went to dealer They did a pressure test found coolant Intrusion inside Cylinder 2 open TSB 22-2229 Car or SUV if coolant gets into cylinder can cause engine failure

Filed May 12, 2026 · Engine · GA

My vehicle started stuttering & shaking when starting. Then the check engine light came on. It was diagnosed with cylinder 2 & 3 misfire. All spark plugs & coil packs replaced. It got better for about 3 months then the problem came right back. Have replaced coil packs multiple times. Took to dealer who said cylinder misfires were caused from coolant leaking & the only fix was to have engine replaced & quoted $11000. This started at about 95000 miles. Vehicle has had perfect maintenance, all oil changes done on Schedule. Dealer said motor can lock up at any moment & this was a manufacturer error.

Filed Apr 22, 2026 · Engine · NJ

Issue Description: The vehicle developed a check engine light and was diagnosed with a P0302 cylinder #2 misfire. The condition persisted after basic troubleshooting, and the vehicle was taken out of service to prevent further damage. The vehicle was subsequently brought to an authorized Lincoln dealership for diagnostic evaluation. The dealership confirmed that the vehicle requires a full engine replacement due to internal engine failure. The estimated cost of repair is approximately $9,500–$10,000. This failure occurred at approximately 64,000 miles, which is significantly earlier than expected for a major engine failure. Safety Concern: The engine misfire and internal failure can lead to loss of power while driving, creating a potential safety hazard, particularly at highway speeds or during acceleration. Additional Information: Manufacturer technical service bulletins describe coolant intrusion issues in 2.0L EcoBoost engines that can lead to misfires and engine damage. The symptoms experienced in this vehicle are consistent with those described conditions. The manufacturer was contacted for assistance but declined to provide support. Summary: Premature engine failure at low mileage requiring full engine replacement, with symptoms consistent with documented issues affecting this engine type. This condition presents a potential safety concern due to possible loss of power while driving.

Filed Apr 7, 2026 · Engine · WY

In 2023 antifreeze was found in the engine cylinder chambers causing the engine to run rough. We purchased the repair/replacement of a new head gasket at a cost of $3500.00. Now, it is Apirl 2026 and we have developed the same issue plus internal oil leaking in the turbo. Our repair shop says we need to replace the engine and the turbo unit at approx cost $11,200.00 (parts and labor). We have come to learn that this Ford 2.0L 4cyn EcoBoost engine has been found to have a design defect causing regular head gasket failure. So, this is our complaint about this engine and product built by Ford Motor Company. We have come to realize we own a very unreliable vehicle built by Ford.

Filed Mar 11, 2026 · Engine · 111,000 miles · FL

The contact owns a 2017 Lincoln MKC. The contact stated that while driving at an undisclosed speed, the vehicle sputtered with a misfire coming from the engine, with the check engine warning light flashing on the instrument panel. The vehicle was taken to the dealer where it was diagnosed with coolant intrusion in cylinder #3, which caused the engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 111,000.

Filed Mar 11, 2026 · Engine, Fuel system · MI

Related to previous recall [XXX] I had the recall repair done. But my car with only 86,744 miles now has coolant in cylinder 3 and it's misfiring so badly the car shouldn't/can't be driven. Dealership says the entire engine needs to be replaced. I have NEVER had a car this low of mileage that an entire engine needed replacement. This is a design flaw in the 2.0 ecoboost and I now have a probably $20,000 or whatever it may have been worth when it ran... Paperweight. It's just sputtering and spitting out loads of smoke as described in original TSB. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 29, 2026 · Electrical, Engine · NC

At approximately 64,000 miles my engine light came on and I took it to a shop. Cylinder 2 was misfiring so we changed the spark plugs and coils. At 67,000 miles light came on again with same issue and while having my oil changed they noted it was unusually dirty. I changed out plugs and coils again. At 72,000 miles light came on again and I took it to a different shop and learned I had a crack engine block, a problem with these vehicles with ECO boost. I was told I needed a new engine and the only thing I could do was add sealant to buy time. I took it to Lincoln to trade and they refused because of the issue and told me to reset the light and sell to Carmax. I couldn’t do that, it was wrong. I sold it for $1,000 to Nissan because I could no longer afford to be driving my grandson in this unsafe car. Also had a lot of issues with electrical starting from purchase with battery dying and lift gate not working. When I got rid of it the windshield wipers wouldn’t work and radio made aweful static sounds. Horrible car from day 1 purchased brand new.

Filed Jan 27, 2026 · Brakes, Engine · FL

After a repair/service visit at a national auto repair chain, my 2017 Lincoln MKC developed ongoing severe drivability and safety issues. The check engine light began flashing (active misfire), and the vehicle was unsafe for highway travel due to risk of loss of power/engine damage. Independent shop documentation reports cylinder #4 misfire (P0304) and additional engine timing-related code(s), low oil condition, and notes indicating internal engine damage and that the engine may require replacement. The vehicle also had a vacuum/brake booster line issue that affected brake assist until corrected. The problem has been confirmed by independent service centers and the vehicle is available for inspection. There was a near crash, but no fire, injury, or police report occurred.

Filed Jan 12, 2026 · Engine · VA

My Lincoln MKC 2017 is having a recurring problem with a misfire in the 3rd cylinder due to a hood gasket, a crack in the coolant, and leaking on the sparks and coils. I have had my mechanic work on and look at it, and it is a manufacturing defect. When I called, there was no recall listed for my vehicle except the backup camera. However, when you look at Kelly Blue Book, it says there is more than one engine recall and issue, which is exactly what is happening to my Lincoln. The engine block heater may crack and develop a coolant leak, causing it to short circuit when the block heater is plugged in.