2021 Hyundai Palisade: sudden loss of power

Filed Oct 29, 2026 · Engine · NE

Vehicle Information: 2021 Hyundai Palisade Limited (3.8L V6 Engine) Complaint Description: While driving at highway speeds, the vehicle suddenly began making a loud engine knocking noise, followed immediately by a total and catastrophic structural failure of the engine. A connecting rod bearing seized and the rod broke, punching a hole directly through the metal engine block. This mechanical failure caused an immediate, complete loss of motive power and propulsion while traveling in high-speed highway traffic. The sudden loss of engine power simultaneously disabled the power steering and power braking assistance, creating an extreme and immediate safety hazard as I was forced to navigate a completely dead, non-responsive vehicle across multiple active lanes of traffic to reach the shoulder. The vehicle was manually pushed directly to a licensed Hyundai dealership 1/2 a mile, where technicians confirmed a catastrophic internal engine failure with a thrown rod through the engine block. The vehicle had a consistent and documented maintenance history prior to the incident. No warning lights or oil pressure indicators illuminated on the dashboard prior to the sudden knocking and immediate engine destruction. This defect poses a severe, life-threatening safety risk due to the sudden loss of vehicle control on public highways.

Filed Sep 1, 2026 · Electrical, Engine · IL

I am reporting a potential safety defect involving my 2021 Hyundai Palisade Calligraphy AWD. The vehicle has experienced repeated engine and drivability problems and multiple breakdowns following replacement of the engine by Hyundai. The original engine developed excessive oil consumption and was ultimately replaced by Hyundai with a new engine. Following the engine replacement, the vehicle experienced numerous additional mechanical problems and repair attempts, including engine rattling/pinging, intake-manifold replacement, oil valve-seal replacement, multiple cylinder misfires, ignition-system problems and an ignition-coil failure. Most concerning are repeated incidents involving severe shaking/lurching, loss of engine power, stalling and failure to restart. During one incident following repairs, the vehicle ran extremely rough, stalled and would not restart after approximately 20 miles of driving and had to be towed back to the dealership. During another incident, the vehicle experienced heavy shaking on startup, stalled and had severely limited power. Diagnostic history showed misfires involving multiple cylinders. On June 29, 2026, at approximately 103,671 miles, I was driving at approximately 50 mph when the vehicle began to lurch and shake, lost power, stalled and would not restart. The vehicle had to be towed back to the Hyundai dealership. The unexpected loss of propulsion and stalling while traveling at approximately 50 mph created a serious safety concern because I could no longer rely upon the vehicle to maintain power in traffic. The dealership subsequently identified an ignition-coil short/failure and replaced an ignition coil. The vehicle has nevertheless continued to experience additional mechanical problems. The vehicle is currently again at the Hyundai dealership. It has generated diagnostic code P0430 for Bank 2 catalyst efficiency below threshold, and Hyundai has recommended replacement of both catalytic converter/manifold assemblies. Th

Filed Apr 20, 2026 · VA

I was driving, the car was making a noise and shaking. No warning lights were on indicating anything wrong. All of a sudden the entire car lost power while I was driving highway speeds. I tried to turn back on and everything was flashing. Turned back off. Turned on and car turned on. Still making noise. No warning lights. Then it happened again while driving. Got the car home parked. It’s lucky that no one hit me as I wasn’t moving on a highway and had my child in the car.

Filed Mar 24, 2026 · Electrical · 63,400 miles · PA

The contact owns a 2021 Hyundai Palisade. The contact stated that on three separate occasions while driving 40 MPH, the vehicle lost power steering assist functionality. Several warning lights were illuminated, and the headlights and turn signals became inoperable. The contact stopped the vehicle and shifted into reverse (R); however, the rear-view camera failed to operate as intended. The vehicle was taken to the residence, but was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 63,400.

Filed Mar 10, 2026 · Engine · FL

The engine in my 2021 Hyundai Palisade experienced sudden loss of oil leading to engine failure. The vehicle had been regularly serviced and maintained at a Hyundai dealership according to recommended intervals. During multiple service visits, the dealership informed me the vehicle was low on oil. An oil consumption test was performed but the results were inconclusive. At approximately 99,500 miles, the vehicle developed an oil leak which the dealership diagnosed as a gasket issue and repaired under warranty. An oil change was completed at that time. Approximately 5,000 miles later, while driving, the vehicle began experiencing loss of power and rough engine operation. I immediately drove the vehicle to the dealership. The dealership later informed me the engine had no oil in it when inspected. There were no active external leaks observed at that time. The dealership stated that it is “normal” for this engine to consume up to one quart of oil per 1,000 miles. The engine now requires full replacement due to internal damage caused by oil loss. This situation created a safety concern because the vehicle began losing power while in operation. The failure occurred suddenly without warning indicators prior to the loss of engine performance. The vehicle had documented oil level concerns during previous service visits, suggesting a potential excessive oil consumption or engine defect. The failed engine is currently available for inspection at the dealership.

Filed Jan 8, 2026 · Engine, Transmission · TN

Vehicle experienced engine failure previously and received a Hyundai-installed replacement engine in February 2025. Replacement engine is now setting DTC P000A00 – Intake Camshaft Position Slow Response (Bank 1). Hyundai dealership master technician confirmed excessive variance between commanded and actual cam timing, indicating a VVT / cam timing failure controlled by oil and actuators. Hyundai is refusing to cover diagnosis and repair under replacement engine warranty and is requiring customer-paid tear-down despite fault originating within the engine assembly. Concern is for internal engine timing failure that may lead to engine damage or loss of power. This appears consistent with known Hyundai engine timing and oil control issues

Filed Dec 21, 2025 · Engine · IL

The engine failed due to excessive oil consumption/internal oil loss. The engine is currently installed in the vehicle and available for inspection upon request. The issue began while the vehicle was under warranty and has progressed to the point where engine replacement has been recommended. Ongoing oil loss and engine malfunction created a risk of sudden engine failure or loss of power while driving, which could lead to stalling or reduced ability to safely control the vehicle. This presents a safety risk to the occupants and other motorists, especially at highway speeds. Yes. The issue was confirmed by an authorized Hyundai dealership through oil consumption monitoring, diagnostic testing, and inspection after the check engine light illuminated. Hyundai has acknowledged the problem by authorizing testing, attempting repairs, and recommending engine replacement. Yes. The vehicle has been inspected by an authorized Hyundai dealership, and the issue has been reviewed by Hyundai Motor America through warranty and goodwill claims submitted by the dealer. es. The first symptom was unexplained oil loss beginning at approximately 66,000 miles, with no visible external leak. Later, the check engine light illuminated, prompting further inspection and leading to the recommendation for engine replacement.

Filed Nov 19, 2025 · Transmission · TX

The 2021hyundai palisade at a four way light stop busy intersection. Upon giving has and making the left turn from cimmiron unto saratoga blvd the vehicle was making a clunking noise like if vehicle in 4wd but the vehicle is an awd and it loss like power in the middle of the intersection almost rear ended and hit by another vehicle because the light begun to change. Took the vehicle to hyundai and found out online and at the dealer this is a common issue with awd palisades. There is even a tsb bulletin for this issue, the 4wd coupling starts going bad and makes vehicle noises and lose power in drivetrain. This is very dangerous and action must be taken before lawsuits coming flying. For crying outloud I had my grand babies with me and almost got into a three-way car accident because the palisade decided not to go in the middle of the intersection. Hyundai needs to fix all faulty awd couplings that make the tires turn properly. My friend has a 23 model and having same issues it is also an all-wheel drive palisade. Do something before something bad happens hyundai is aware and there is a forum on this issue but no recall this is insane.

Filed Nov 2, 2025 · Engine, Fuel system · FL

I own a 2021 Hyundai Palisade Calligraphy with approximately 114,000 miles. The transmission had to be replaced at around 98,000 miles. Recently, before my next scheduled oil change (I had about 1,000 miles left), my vehicle suddenly began making a loud knocking noise and lost power. The dealer informed me that the engine may have blown. There were no warning lights, oil indicators, or overheating signs before this happened. The car has been regularly maintained and serviced with timely oil changes. This appears to be a premature engine failure possibly related to oil consumption or an internal defect, as many other Palisade owners have reported similar issues. Hyundai Consumer Affairs has been contacted, and a case number is being opened for review. I am filing this complaint to report a potential widespread engine problem and request investigation into 2021 Hyundai Palisade engine reliability and oil-related failures.