The 2019 Lincoln Nautilus shares the CD4 platform with the Ford Edge and inherits some problematic EcoBoost quirks, particularly catastrophic low-speed pre-ignition (LSPI) failures on the 2.7L twin-turbo and carbon buildup issues on both turbo engines. The 8-speed automatic transmission has shown premature oil cooler and mount failures that can strand you if ignored.
2.7L EcoBoost Catastrophic Engine Failure (LSPI)
Occasional · high severityTypical onset: 30,000-70,000 mi
Symptoms: Sudden loss of power with violent knocking under light acceleration from low RPM, Metal debris in oil causing bearing failure and rod knock, Check engine light with misfire codes before total failure, Coolant mixing with oil in severe cases
Fix: Low-speed pre-ignition destroys pistons and rods. Requires complete short block replacement or engine rebuild with updated pistons. 18-25 labor hours depending on shop efficiency and parts availability. This is a known Ford EcoBoost design flaw affecting high-torque turbo V6s under specific load conditions.
Estimated cost: $8,500-14,000
Transmission Oil Cooler Line Failure
Common · high severityTypical onset: 50,000-90,000 mi
Symptoms: Transmission fluid leaking near radiator area, Harsh shifting or slipping when fluid level drops, Transmission overheating warnings on dash, Pink or red fluid visible under vehicle
Fix: The plastic quick-connect fittings on the cooler lines become brittle and crack. Requires replacement of cooler lines and often the entire cooler assembly. If caught early, 2-3 labor hours. If transmission ran low on fluid, expect internal damage requiring rebuild. Flush and filter service mandatory after repair.
Estimated cost: $600-1,200
Direct Injection Carbon Buildup
Common · medium severityTypical onset: 60,000-100,000 mi
Symptoms: Rough idle and misfires on cold start, Loss of power during acceleration, Poor fuel economy (3-5 mpg drop), Check engine light with P0300-series misfire codes
Fix: Both the 2.0L and 2.7L EcoBoost engines have no port injection to keep valves clean. Requires walnut blasting of intake valves. 4-6 labor hours to remove intake manifold and clean all cylinders properly. Should be done preventively every 60k-80k miles on these engines.
Estimated cost: $600-900
Transmission Mount Failure
Common · medium severityTypical onset: 40,000-80,000 mi
Symptoms: Clunking when shifting from Park to Drive or Reverse, Excessive vibration at idle in gear, Visible engine movement when accelerating hard, Metallic banging over bumps
Fix: The rear transmission mount tears due to torque from the turbo engines. Requires lift access and subframe partial drop on some configurations. 2-3 labor hours. Often replace both engine and transmission mounts simultaneously since labor overlaps.
Estimated cost: $400-700
Turbocharger Wastegate Rattle and Failure
Occasional · medium severityTypical onset: 70,000-110,000 mi
Symptoms: Rattling noise from engine bay at idle or light throttle, Loss of boost pressure and sluggish acceleration, Check engine light with underboost codes (P0299), Rattling disappears under load
Fix: Wastegate actuator arm wears and rattles inside turbo housing. On 2.7L both turbos may need replacement. Requires turbo removal and replacement, new gaskets, fluids. 6-9 labor hours for single turbo, 10-14 for both on 2.7L. Oil and coolant lines often seep after high mileage.
Estimated cost: $2,200-5,500
PTU (Power Transfer Unit) Fluid Leak and Whine
Occasional · medium severityTypical onset: 55,000-95,000 mi
Symptoms: Whining noise that increases with speed (AWD models only), Fluid leak at front of rear driveshaft, Burning smell from front axle area, AWD malfunction warning on dash
Fix: The PTU seal fails and unit runs dry, damaging internal gears. Ford spec calls for lifetime fluid but that's unrealistic. If caught early with just seal leak, 2 hours labor. If internal damage occurred, PTU replacement requires 4-6 hours and often rear driveshaft work.
Estimated cost: $300-2,800
Fuel System Low Pressure Sensor Failure
Occasional · low severitySymptoms: Check engine light with P0087 or P0191 codes, Hard starting or extended cranking, Occasional stalling at idle, Reduced power mode activation
Fix: The low-pressure fuel sensor on the fuel rail fails intermittently. Simple sensor replacement, but accessing it requires removing engine cover and sometimes intake components. 1-1.5 labor hours. Always check actual fuel pressure before throwing parts; could be failing fuel pump in tank.
Estimated cost: $250-450
Buy only if you can afford catastrophic 2.7L engine failure or stick to well-maintained lower-mileage examples with full service records—the luxury doesn't offset the EcoBoost landmines.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.