Vehicle set on adaptive cruise control, car accelerated to get back up to set speed and had a hard "clunk" sound. Driver turned off cruise control and attempted to accelerate vehicle. Vehicle tachometer revved up, transmission didn't shift properly, still shifting hard or not shifting at all. Once stopped, driver of vehicle found the back of the car covered in what appeared to be ATF and what…
2020 Lincoln Navigator powertrain problems
severe 16 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
16
Recalls
0
Avg fix
$2,500
1fire
When does it fail?
Of the 16 powertrain complaints filed for the 2020 Lincoln Navigator, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 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
Powertrain accounts for 57% of every owner complaint on file for this vehicle — the dominant problem area across 3 categories tracked.
Among the 9 model years of Lincoln Navigator in our records for powertrain problems, this one ranks #2 by owner-complaint volume.
The failure pattern owners describe
Buyer takeaway: The 2020 Lincoln Navigator's 10R80 transmission has serious, recurring issues—neutral-out, harsh downshifts, overheating, and slipping—that persist even after replacement and rebuild attempts and create highway safety hazards; multiple owners report loss of power at highway speeds and one reports a fire, with no consistent fix available from dealers.
The 2020 Navigator's 10R80 transmission fails in multiple ways, many occurring at highway speeds. Most common: the transmission unexpectedly shifts into neutral or a neutral-like state during acceleration—owners lose all power for seconds while the engine revs, then the car suddenly slams back into gear with a loud bang or clunk. This has happened at 35, 50, 65, 70, and 75 mph, frequently during passing maneuvers or merge attempts, creating dangerous traffic situations where other vehicles brake hard to avoid collision.
Harsh downshifts follow: violent gear changes, tire chirping, and jarring jerks that startle drivers. Several owners report transmission overheating to 215–237°F, with oil leaking onto the exhaust, smoke billowing, and burning smells—one vehicle ignited completely within 2000 miles of a replacement transmission.
The grinding, slipping, and delayed-engagement pattern repeats: transmission slips under load, doesn't shift on demand, and fails to downshift when needed. Dealers cite TSBs 23-2120, 23-2123, and 24-2101 as applicable, and one Safety Recall (O1 for PCM reprogramming) is incomplete on multiple VINs. Yet replacements, rebuilds, torque converter swaps, and valve body replacements have not stopped the failures. Owners report dealer inability or unwillingness to fix the problem without a stored diagnostic code, even when video evidence exists. One owner drove home from a dealer the day after transmission rebuild and experienced the same neutral-out event again.
Same Lincoln Navigator powertrain reports on nearby years: 2018 · 2019
Failure modes owners describe
Neutral-out / Unintended neutral engagement during acceleration
Transmission shifts into neutral or neutral-like state unprompted while driver is accelerating, resulting in sudden loss of engine power and forward propulsion. Vehicle either re-engages after a delay or requires restart.
When: 35–75 mph during acceleration, merge, pass, or hill climb; recurring across multiple mileages (28k–100k+)
Symptoms owners cite: Engine revs but vehicle loses power/acceleration; Transmission slips into neutral while in Drive gear; Delayed re-engagement after loss of power; Loss of motive power lasting seconds to minutes; Hard jerk or 'clunk' when re-engaging
Codes mentioned: Shift System Fault warning (reported in #1)
Repairs/costs cited: Transmission replacement performed; issue recurred in at least one case (narrative #2: transmission rebuilt after 3rd occurrence, fault repeated day after return). Torque converter replacement, valve body replacement, transmission pump repair cited in narrative #10. CDF drum replaced under warranty per narrative #9.
Recalls/TSBs owners mention: TSB 23-2120 (momentary neutral-out), TSB 23-2123 (harsh/delayed engagement/shift), TSB 24-2101 (harsh/delayed engagement) cited for 10R80. Recall O1 for PCM reprogramming mentioned in narrative #10 but incomplete on VIN. Safety Recall noted in #15 for 2020–2024 Navigator but not showing on owner's VIN lookup. Extended warranty offered in narrative #2.
Harsh downshift and violent re-engagement
Transmission downshifts abruptly or with excessive force, sometimes accompanied by audible chirping of tires, jarring sensation, or loud banging noise. Often occurs during passing or highway acceleration.
When: Highway speeds (50–75 mph); one incident reported at merge; mileage range 45.6k–100k+
Symptoms owners cite: Sudden downshift at speed; Violent re-engagement into lower gear; Rear tires chirp / wheel spin sensation; Loud 'bang' or 'clunk' sound during shift; Hard or delayed gear engagement; Jarring, jerking acceleration response
Repairs/costs cited: Transmission rebuild or replacement performed in multiple cases.
Recalls/TSBs owners mention: TSB 24-2101 and TSB 23-2123 address harsh/delayed engagement for 10R80 transmission.
Transmission overheating, fluid leakage, and smoke/fire
Transmission fluid temperature rises into danger zone (215–237°F); fluid leaks onto exhaust manifold or rear hatch; smoke and burning smell observed. In one case, vehicle ignited after replacement transmission failure.
When: During or shortly after highway driving and hard shifts; one fire occurred <2000 miles after replacement transmission was installed
Symptoms owners cite: Transmission temperature warning or display reading 215–237°F; Smoke under vehicle and from exhaust; Oil/ATF visible on exhaust and rear hatch; Burning smell; Hard shifts preceding overheating episode; Vehicle fire (narrative #11)
Repairs/costs cited: Transmission rebuild performed. In narrative #11, replacement transmission failed catastrophically within 2000 miles, resulting in complete vehicle fire.
Transmission grinding, slipping, and abnormal noise
Transmission produces grinding or abnormal sounds; slips or fails to engage properly under load. Video evidence of slipping noted in one complaint.
When: Throughout usage; mileage range 28k–100k+
Symptoms owners cite: Abnormal grinding sounds from transmission; Transmission slipping under acceleration (video evidence in narrative #2); Crackling sound during shift (narrative #4); Hard shifting when shifting down 3–1 or up 1–3
Repairs/costs cited: Video footage of slipping recorded. Dealer unable to replicate; transmission rebuild and replacement attempted without resolving issue in narrative #2.
Engine stalling during operation
Vehicle engine shuts off inadvertently while stopped or during braking, unrelated to ignition command.
When: At complete stop and during braking; mileage ~100k
Symptoms owners cite: Vehicle shuts off without warning at stop; Vehicle shuts off when depressing brake pedal; No warning light illuminated; Vehicle restarts when Push to Start button pressed
Repairs/costs cited: Dealer test-drove, determined transmission replacement needed but did not perform repair. Failure not duplicated on initial service visit.
Persistent issues after warranty repairs and multiple rebuilds
Defects recur or continue despite repeated dealer interventions, including transmission rebuilds, replacements, torque converter replacement, and valve body replacement.
When: Recurring across all mileages; complaints span multiple service attempts
Symptoms owners cite: Hesitation under acceleration; Harsh and delayed shifting; Loss of power; Vehicle shaking at 28–30 mph; Abnormal fuel consumption
Codes mentioned: Safety Recall O1 (PCM reprogramming)
Repairs/costs cited: Two full transmission replacements, torque converter replacement, valve body replacement, and transmission pump repair performed on one vehicle (narrative #10). No confirmed repair date or engineer visit scheduled despite multiple service visits since early March.
Recalls/TSBs owners mention: Safety Recall O1 for PCM reprogramming incomplete on VIN despite multiple service visits (narrative #10).
Synthesized from 16 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 10 most recent
Category: Power Train -> Automatic Transmission Subject: 2020 Lincoln Navigator – Repeated Missed Warranty Repairs – Transmission Neutral-Out & Violent Downshift at Highway Speed Description: On [XXX], while traveling at approximately 70 mph on [XXX], my 2020 Lincoln Navigator suddenly downshifted, free-wheeled into neutral, then violently re-engaged into a lower gear, chirping the rear tires…
Had transmission problems before this final issue. With that said the dealership ended up replacing the transmission as it was under warranty. Not even 2000 miles later we are coming back from vacation and I lost total power of the vehicle but since I was going around 70 mph we made it to the shoulder of the highway. Once there the vehicle was already smoking so we all got out of the vehicle and…
The transmission system failed, causing jerking during acceleration. The original transmission was replaced by the dealer, so it may be available for inspection if retained by the dealer or returned to Ford/Lincoln. Jerking during acceleration can create safety risks including: unpredictable vehicle behavior during merging or passing, potential loss of control in traffic situations, and…
Transmission hard shifting when shifting down 3-1 and up 1-3 I see there is a recall for 2020-2024 navigator but mine doesnt show recalls when i looked for it
CDF Drum Failure is a known issue to Ford. They have issued a technical service bulletin (TSB 22-2428) to replace poorly designed components that have since been redesigned. The failure mode can cause violent gear shifts (from gear 10 to gear 1) at high speeds, which is a significant safety concern. While driving on the highway, the transmission would not shift between gears and the car lurched.…
The contact owns a 2020 Lincoln Navigator. The contact stated while at a complete stop, the vehicle shut off inadvertently. The contact stated that the vehicle restarted upon pressing the Push to Start button. The contact stated upon depressing the accelerator pedal, the vehicle jerked, was sluggish, and made an abnormal crackling sound. The vehicle then responded as needed and the contact…
2020 Lincoln Navigator, 10R80 transmission. Following two full transmission replacements, torque converter replacement, valve body replacement, and transmission pump repair, vehicle continues to exhibit hesitation under acceleration, harsh and delayed shifting, loss of power, shaking beginning at approximately 28-30 mph felt through the floorboard, and abnormal fuel consumption. Independent tire…
On [XXX] at or about [XXX]., I was traveling on the highway while going up hill to pass a slow moving vehicle, in the passing lane, suddenly lost total acceleration in which a wrench light appeared as if the transmission disengaged. I was able to coast to the into the driving lane, to get to the shoulder of the road in which the transmission engaged back at about 10mph. I was able to continue…
Transmission issue: Not shifting properly while on the highway and almost causing a crash by loosing power and shifted into neutral after attemting to accelerate. The next time it occured the transsmission would not down shift and I was not able to accelerate.
Had powertrain trouble with your 2020 Lincoln Navigator?
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 powertrain problem on the 2020 Lincoln Navigator?
It's a meaningful issue. 16 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Based on the 16 complaints filed, powertrain issues most often appear around 72,800 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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/2020/Lincoln/Navigator.
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.