What 413 owners told NHTSA about the 2021 Hyundai Palisade Hybrid Hev

Multiple attempts to have car repaired for a year and a half with no resolution. See attached docs. Included is a letter to Hyundai, timeline of subsequent events, warranty info. Invoices were too large to upload, there are 7 of them.

NHTSA ODI 11740607

My Hyundai Palisade was bought brand new in 2020. It currently has 131,500 miles on it. I noticed at around 110,000 miles that my oil was getting low before each oil change. I check my oil frequently. No oil leaks can be found. So the engine is burning oil somehow. My mechanic says Hyundai says its acceptable for it to burn oil after 100,000 miles but 2 quarts between oil changes seems excessive. Ive talked to other Palisade owners who have this year model and have the same issue. If I were not a responsible consumer and checked my oil as frequently as I do then its very possible another consumer could have burned their engine up before they knew what was happening because there is no leak just burning of the oil. This is very dangerous.

NHTSA ODI 11740741

After emissions campaign 9c9, downshifting using paddle shifters on downhill grades, engine failing to maintain speed. Does not slow car down like it did before, seems like no compression. Fuel efficiency / emissions over traditional transmission braking, forcing drivers to use brakes more often to avoid high RPMs. Safety Risk: The lack of engine braking can lead to brake overheating or fade on long downgrades, lack of engine braking can lead to brake overheating or fade on long downgrades. Above is what Google found [XXX] ) when i put in some key words. Here is what i wrote to a [XXX] . my 2021 Hyundai Palisade Campaign 9C in your article about the 2022 having the same downshifting issues after the Emissions recall was done. Have you heard from other 2021 owners? I use the downshift for breaking/keeping my speed down to save the breaks here in the [XXX] , [XXX] , and [XXX] mountains. Does not function as designed. "Loss of engine braking" " High Engine Revving" Did go back to dealer and drove tech around lot. I called back later and nothing they can do. 5/12/26 Went to the dealer again, for an appointment. Dealer service manager said it working as designed. Bull, was not that way before. He said if i don't like it, trade in the car.. He also said that I can't compare the Palasade to the other cars that have manual shifting. bull. I said Why have them if they don't do anything... Tried to explain that I have been driving for over 40 years and have always downshifted every car. This was fine until the emissions recall. Got no place with the dealer. Contacted Hyundai Corporate last week, and they should be following up on Wednesday/tomorrow. 5/13/26 Left VM for Sales GM at Bowser today where i purchase the car. Wrote above and more to: [XXX] Contacting you now. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11737384

The vehicle would shut off when idling at lights or in reverse and have delayed acceleration after stops. It also would shut off when idling in park. I took it to the dealership summer-fall 2025 and they were too busy to investigate the issue because no alarms were present. The vehicle started doing the same thing and the check engine light came on March 2026. Now it has been in the shop for many weeks because of an fuel injector issue. The dealership service department says all 6 injectors need to be replace, but warranty won't cover them all. This appears to be a common issue with 2021 Hyundai Palisade vehicles and should be investigated for a safety recall.

NHTSA ODI 11734796

The engine oil system failed due to a persistent oil leak that was present from the time of purchase on December 16th 2024. The vehicle is available for inspection upon request and is currently immobile due to a completely seized engine. My safety was put at serious risk because the vehicle has no functioning low oil warning indicator to alert the driver of critically low oil levels. I was driving this vehicle regularly for work with no indication whatsoever that the engine was losing oil. A seized engine can cause sudden and complete loss of vehicle control which puts not only the driver but other drivers and pedestrians at risk. This failure occurred without any warning while the vehicle was in regular use. The oil leak was brought to the selling dealership, Auto Merchants Inc. in Plano Texas, for repair on January 6th 2026. They kept the vehicle overnight and confirmed it was fixed. The problem was not resolved as the vehicle continued losing oil. On March 3rd 2026 I discovered the engine was completely empty and added 6 full quarts of oil with no warning light appearing. I also contacted Hyundai consumer affairs and the Hyundai dealership directly who confirmed the manufacturer warranty had already expired at the time of purchase on December 16th 2024 and declined to cover the repair. The vehicle has not yet been formally inspected by the manufacturer or insurance representatives. The dealership serviced it on January 6th 2026 and claimed the leak was repaired however the engine seized on April 20th 2026 due to continued oil loss. There were zero warning lamps or indicators of any kind prior to the engine seizing completely on April 20th 2026. No low oil warning light appeared at any point during the 4 months I owned this vehicle despite the engine running completely out of oil on three separate occasions. The only symptom prior to full engine seizure was the vehicle sputtering when coming to a stop on April 19th 2026, one day before the engine seized completely

NHTSA ODI 11733162

I have been having an issue with my 2021 Hyundai Palisade's engine oil consumption. It is constantly burning oil at a high rate, requiring me to purchase oil constantly. I had it serviced at Hyundai in Gurnee, IL. An oil consumption test was conducted. Hyundai corporate stated that my vehicle's engine was not burning oil at the required rate, which prompted an engine replacement. I reached out to corporate because the issue is persisting, but they never responded to my concern. This issue is costing me a significant amount of money, as I have to purchase oil without a remedy from Hyundai regarding my engine oil consumption. As a consumer, it's frustrating because I left without answers on an issue they definitely know about.

NHTSA ODI 11730566

The vehicle suffered a structural "seam leak" on the pressurized oil filter housing. This was verified by an authorized Hyundai dealer (Dealer XXX, Invoice #XXX). The failure is a structural crack in the housing component itself, not a maintenance-related seal or filter failure. This defect causes pressurized engine oil to spray directly onto the hot engine block while the vehicle is in operation, creating a severe and immediate fire hazard. Additionally, the rapid loss of oil and oil pressure poses a risk of sudden engine seizure or stalling at highway speeds, which could lead to a crash. Despite being a known manufacturing defect in a critical engine component, the manufacturer has refused to address the safety implications or offer a remedy. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11729793

A week or so after taking the car in for an oil change, I was on the highway and heard a rattling sound coming from the engine. There were no indicator or warning lights from the dashboard. The car then stopped accelerating. It was on, and the accelerator increased the RPMs but the car did not move faster. I safely got home and checked the oil and it had less than a quart. There were no low-oil indicator lights telling me the oil was low. Separately, this week, while driving in the city, the engine again started making rattling sounds and completely shut off forcing me to pull off the road. Again, prior to the shut off there were no indicator lights. I was able to pull to the side of the road safely. I tried to restart the car and it would idle roughly befor the engine shut off again. After waiting 30 minutes, I checked the oil to see if the previous cause was the culprit, but this time the oil was still full. After 45 minutes, I was able to restart the car and drive home. I researched the issue and there are many complaints on Reddit about this for this make and model. Since the issue is intermittent and can't be replicated at the dealership, there is no fix offered. I no longer trust or feel safe driving this car, especially on highways.

NHTSA ODI 11728587

While the vehicle was off and in my garage, the vehicle started on its own and was idling at an extremely high RPM. I was the only person home, the keys were out of reach on a key rack and had not been driven yet for the day. I walked into the garage and found my vehicles engine running at a high RPM and all the electrical displays within the vehicle were compleltely off with only the engine running. I retrieved my keys and my only thought was to start the car, which I did which then brought the RPM down to standard idle. I am extremely concerned as a vehicle idling in an eclosed garage poses extremely high risk to Carbon Monoxide.

NHTSA ODI 11727484

The car will start shaking, can’t exceed a certain mpg, and does not speed up. The check engine light comes on. The car is available for inspection. I drive on the freeway and slowing down, and shaking can cause accidents. This a continuous problem.

NHTSA ODI 11726837

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.

NHTSA ODI 11723272

Excessive oil consumption. The vehicle is burning nearly 4 quarts of oil between changes. This started at around 100,000 miles with no warning lights. The only indication was a strange tapping noise coming from the engine.

NHTSA ODI 11722801

This vehicle is still using the defective style piston rings causing oil consumption of 1.5qts in 1000miles, With only 100,000miles. This has been ongoing since we purchased the vehicle with 94,000 miles. This needs to be issued as a recall to replace piston rings or the engine entirely. My valuemax level 4 extended warranty is refusing to repair the issue stating hyundai/kia has carbon buildup on the piston rings. This engine could run low on oil and cause a fire, or a engine shut down causing a crash.

NHTSA ODI 11721125

We have been in Hyundai’s “oil consumption” protocol for the past 8-10 months. We’ve had 6 oil changes in that time. Each oil change was right a 1,000 miles. My engine is burning between 1.5 - 2.5 quarts of oil EVERY 1,000 MILES. They have been trying to drag this out not having to take ownership of the issue. After reading online, clearly there is an issue with 2021 Palisades and a recall needs to be issued.

NHTSA ODI 11720993

OIL FILTER HOUSING IS LEAKING. PLASTIC PART IS WARPED AND DOES NOT ALLOW FILTER TO SEAL. LEAKING OIL IS A FIRE HAZARD AND COULD CAUSE ENGINE FAILURE.

NHTSA ODI 11719625

The engine is burning oil at a rapid rate. It's burning one liter every 70 miles.

NHTSA ODI 11719663

Engine burning 6qts in less than 3k miles of driving. Aside from that, the engine light does not always illuminate to tell me it is low. Now i watch monthly and add oil as needed

NHTSA ODI 11718242

I bought my vehicle almost 2 years ago with 30K miles on it. In December 2025, the car started stalling and wouldn’t run properly. I took it into the dealership and they stated that the engine was burning oil. This was at 90K miles. Hyundai refuses to fix the motor issue because I’m not the original owner. This issue would have started even before the 90K miles because the vehicle had almost used all its oil in between the normal oil change interval. They did a sludge clean and we checked the oil again after 1500 miles and it had already used over a quart of oil.

NHTSA ODI 11714406

Oil filter housing leak. Does not impact oil levels but more notable during cold weather as the ring tends to shrink.

NHTSA ODI 11713976

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

NHTSA ODI 11709745

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.

NHTSA ODI 11706426

My vehicle experienced a sudden and immediate loss of motive power due to a catastrophic internal engine failure, creating a severe road safety hazard. While driving and attempting to accelerate or merge, the vehicle exhibits extreme hesitation, severe misfiring on cylinder #2, and rough, unstable idling. This unexpected loss of drive power made the vehicle unpredictable and unsafe to operate under normal driving conditions, significantly increasing the risk of a crash. The vehicle is currently at the Hyundai dealership (Fox Ann Arbor Hyundai) for diagnosis. The dealer has confirmed and documented the following internal mechanical defects at only 86,000 miles: Compression loss in cylinder #2. Cylinder wall scoring and pitting. Evidence of blow-by and heavy carbon buildup in the combustion chamber. Misfire and rough idle. Oil consumption as a result of the cylinder failure. This failure is a premature mechanical defect, not normal wear. Failures of this nature (sudden loss of motive power due to internal engine defect) have been cited by NHTSA in other recalls and are known to increase the risk of a crash or fire. The manufacturer has acknowledged the defect by offering only 50% goodwill toward a repair, but this defect remains a critical, unresolved safety hazard that requires a full, safe engine replacement."

NHTSA ODI 11703729

I started smelling coolant fumes in my vehicle. Upon inspecting the coolant reservoir, I noticed it was empty. Upon inspecting the radiator itself, I noticed that some of the coolant was leaking. Fumes associated with the leaked liquid touching hot parts in the engine were entering the vehicle cabin. I noticed there was a technical bulletin regarding this issue for Hyundai Palisades. I informed the dealer as well as Hyundai corporate. Despite the technical bulletin, both entities ignored my issue and said it was not covered under warranty. In addition to potentially impacting the engine (if the coolant runs out), I believe the fumes are toxic and pose a serious health risk to passengers. As this seems to be a well known problem, I believe it needs to result in a recall (and not a technical bulletin).

NHTSA ODI 11701039

The engine failed due to oil consumption. The engine burns to much oil. It burns more oil than it holds during normal intervals between changes. It also did NOT give any oil lights or engine lights on the dash (not one indicator came on). When we took it in the service advisor told us the computer had indicated a problem, but that was for the technician.

NHTSA ODI 11698137

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.

NHTSA ODI 11697007