These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
full bulletin at NHTSA ↗2011 Lincoln MKX engine problems
severe Owners of the 2011 Lincoln MKX have filed 18 NHTSA complaints about the engine, typically surfacing around 48,000 miles at roughly $3,100 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
18
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2007 MKX | 12 |
| 2008 MKX | 3 |
| 2010 MKX | 3 |
| 2011 MKX (this page) | 18 |
| 2012 MKX | 3 |
| 2013 MKX | 11 |
| 2014 MKX | 5 |
2fires
When does it fail?
Of the 18 engine complaints filed for the 2011 Lincoln MKX, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 10 model years of Lincoln MKX we track for engine problems, this one carries the most owner complaints on file — 18.
No new NHTSA engine complaint has been filed on this vehicle in over 8 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
full bulletin at NHTSA ↗Some 2007-2016 Edge/MKX/Flex/MKT/MKZ/MKS/Taurus/Police Interceptor Sedan/Explorer/Police Interceptor Utility vehicles equipped with AWD and built on or before 30-Jun-2016 may exhibit a propane or natural gas odor during idle or low speed driving. This may be due to break down of the power transfer unit (PTU) fluid caused by excessive heat. If the source of the odor is identified as originating from the PTU, an idler bearing repair kit is available to repair the PTU. Refer to the Workshop Manual (WSM), Section 308-07. If the PTU is determined to be repairable, utilize kit GB5Z-7P258-A and the included instruction sheet. For claiming use causal part 7P258 and applicable labor operations in sec
full bulletin at NHTSA ↗The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to diagnose possible ETB concerns. The IDS has a limited refresh rate when reading these PIDs and cannot display quickly enough to validate a concern. The PCM automatically monitors these inputs more accurately and will set diagnostic trouble codes (DTCs) when appropriate. Using these PIDs for diagnostics will lead to inaccurate results and improper ETB replacements. If a concern is intermittent and no DTCs are present, refer to historical DTCs and the PC/ED, Section 3 No DTCs Present Index chart for further information.
full bulletin at NHTSA ↗FORD/LINCOLN: WHEN CLIMATE CONTROL SYSTEM IS IN RECIRCULATION MODE, AN EXHAUST ODOR, LIKE SULFUR, IS NOTICEABLE AFTER HILLY DRIVING CONDITIONS OR A HARD ACCELERATION. MODEL 2011-14 EDGE, 2011-15 MKX.. UPDATE.06/11/15.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report sudden, unwarned engine stalls at highway and city speeds—some occurring three times in a single year—with complete loss of power, steering, and braking assistance. The engine typically restarts after minutes, but dealers struggle to find or replicate the problem, leaving owners uncertain the issue is fixed. One owner's husband narrowly avoided a crash on an expressway; another reported only 1,000 feet of road to stop before hitting a guard rail. Lincoln's response to the design-flaw complaint was to offer $250 partial reimbursement and suggest the owner maintain fuel above 1/2 tank.
More severe is a pattern of water pump failures allowing coolant to seep into engine oil, causing catastrophic engine damage requiring $7,000–$10,000 replacement. One owner documented three water pump replacements in two years (May 2021, June 2022, January 2023). Owners describe knocking or clicking sounds before failure and report dealerships performed routine maintenance two months before engine failure without identifying any problem. One owner was stranded roadside with no cell service after complete power loss on a highway.
Same Lincoln MKX engine reports on nearby years: 2013
Failure modes owners describe
Complete engine stall and power loss while driving
Engine suddenly shuts off without warning while vehicle is in motion at highway and city speeds, causing complete loss of power, steering, and braking assistance. Vehicle typically restarts after stalling. Occurs repeatedly in some cases (up to 3 times over 6-12 months for certain owners).
When: Various mileages and timeframes; one at 11,000 miles, another at 150,000 miles; some owners report recurring incidents within 6-12 months
Symptoms owners cite: Sudden engine shutdown while driving; Loss of power steering and power brakes; Wrench symbol or check engine light on dashboard; Engine restarts after stalling; AWD failed warning message (one case)
Codes mentioned: No diagnostic codes present in some cases, Wrench symbol (powertrain indicator)
Repairs/costs cited: Ford dealerships unable to replicate issue; throttle body replacement performed in at least one case ($250 Lincoln contributed toward repair). Software update (computer control module) applied in one case.
Recalls/TSBs owners mention: Lincoln offered $250 partial reimbursement toward throttle body repair in one case; stated 'things fail in cars' when confronted about design issue. Dealership suggested maintaining fuel tank above 1/2 full to prevent stalling.
Water pump failure causing coolant contamination of engine oil
Internal water pump fails, allowing coolant to mix with engine oil, resulting in catastrophic engine damage. One owner reported three water pump failures in approximately two years (2021–2023). Owners describe hearing knocking or clicking noises before engine shutdown.
When: One owner with multiple failures: first water pump replaced 5/16/21, second replacement failed 6/19/22, third failure as of 1/1/23. Other cases not specifically dated but one at 48,000 miles; another had service 2 months before failure; one at 112,000 miles (out of warranty).
Symptoms owners cite: Burning smell; Knocking or clicking noise before shutdown; Low coolant warning light illumination; Vehicle starts smoking; Engine stalls; Engine misses (hesitation)
Repairs/costs cited: Engine replacement required in most cases, costing approximately $7,000–$10,000. One owner spent $2,500 on water pump and coolant flush with no guarantee of engine integrity. Owners report dealership performed service 2 months prior without identifying or preventing failure.
Throttle body failure with oil leak
Throttle body fails, causing engine to stall. At least one case linked to oil leak into throttle body assembly. Vehicle exhibits warning signs of imminent stall before complete failure.
When: Not precisely dated; one case involved recurring stalls over time
Symptoms owners cite: Engine stalling; Loss of power; Vehicle feels like it will shut off suddenly; Wrench warning light
Repairs/costs cited: Throttle body replacement resolved the issue in one case.
Engine control or cooling system module failure
Cooling system control module fails, causing vehicle to smoke while parked and illuminating low coolant warning light.
When: At approximately 48,000 miles
Symptoms owners cite: Low coolant level warning light illumination; Vehicle smoking while parked; Potential engine damage risk
Repairs/costs cited: Vehicle was not repaired according to report.
Synthesized from 18 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
I was driving on a 35 miles/per hour zone without any warning I heard the car making clicking noise and completely shut down. I had someone checked it for me. My coolant was going into my engine. I got it towed to dealer the engine has to be replaced for almost $10,000.00. I had the car service 2 months ago at the dealer and I still over 3,000.00 miles until my next service.
Tl* the contact owns a 2011 Lincoln mkx. While the contact's husband was driving approximately 70 MPH, the check engine indicator suddenly illuminated and the speed reduced. The contact pulled the vehicle over and had it towed to a family member's trailer. The contact called gene mercer Ford of amarillo (located at 3400 s soncy rd, amarillo, tx 79119, 806-355-7471) where the water pump was…
Tl* the contact owns a 2011 Lincoln mkx. The contact stated that while driving approximately 70 MPH, the engine stalled without warning. The vehicle then coasted to the side of the road. In addition, the GPS navigation system failed to operate correctly. The engine restarted and the contact was able to resume as normal. The vehicle was taken to an authorized dealer, where the computer control…
The throttle valve assembly was bad. The car stopped running when the wife was driving highway 105 at 50 MPH. She turned on the flashers and was able to get off to the side of the highway after a short time the car was able to be restarted and driven back to the house. The same thing happened again about two months later. This is a very dangerous situation. The engine stops with no warning.
Had engine trouble with your 2011 Lincoln MKX?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2011 Lincoln MKX?
It's a meaningful issue. 18 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 15 complaints that reported odometer mileage, most engine failures cluster between 26,435 and 103,000 miles, with the median around 48,000. A quarter of owners report trouble before 26,435; a quarter make it past 103,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2011/Lincoln/MKX.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.