Have you been experiencing excessive oil consumption in your Hyundai or Kia vehicle equipped with either the Nu, Gamma, Theta, Lambda, or Kappa engines? If so, you may be part of a new class action lawsuit. The plaintiffs in the suit allege that these engines contain a manufacturing defect that leads to stalling and engine failure.
If you own a Hyundai or Kia equipped with the Nu, Gamma, Theta, Lambda, or Kappa engines and have been affected by this defect, it’s important to know your rights and how to join the class action lawsuit. Read on for more information about the Hyundai-Kia oil consumption lawsuit, and what it could mean for affected owners.
Hyundai-Kia Oil Consumption Problems
Plaintiffs allege that vehicles equipped with the Nu, Gamma, Theta, Lambda, or Kappa engines contain a latent manufacturing defect that causes excessive oil consumption. This defect results in sudden and unexpected vehicle stalling during normal operation, posing a safety concern for all vehicle occupants as well as other drivers on the road.
Continued prolonged use of the engine with low oil levels results in the need to replace small parts, expensive vehicle system components, and even the entire engine – long before replacement should be needed.
When left unaddressed, low oil levels eventually leads to catastrophic engine failure.
Oil Consumption Defect Destroys Engine Parts
The engine defect allows oil to pass into the combustion chamber during the combustion process. Once in the combustion chamber, the by-passing oil is burned off rather than returned for further lubrication.
This not only causes a decrease in engine performance, but also decreases fuel efficiency, causes carbon deposits to form, and damages the engine and various ignition and emission components.
Despite Owner Complaints, Hyundai-Kia Failed to Repair Vehicles Adequately
Multiple owner complaints have been logged to NHTSA and dealerships over the alleged oil consumption problems. However, knowledge of the problem—and presumed knowledge of how to appropriately correct and prevent the oil consumption from recurring—Hyundai has not fixed affected vehicles under warranty.
The suit claims Hyundai-Kia has been long aware of these oil consumption problems. Yet despite knowledge of this defect, it is alleged Hyundai has failed to adequately repair vehicles affected by the engine defect. Even with numerous consumer complaints received, Hyundai dealerships claim that excessive oil consumption is normal.
Additionally, owners report that dealerships are trying to mask the issue by adding significant amounts of oil exceeding the recommended fill level.
These owner experiences are consistent with TSBs Hyundai has issued, but provided service actions do not actually fix the oil consumption defect. Even with Hyundai’s and Kia’s 10-year 100,000 mile limited powertrain warranty, owners have and will continue to incur expenses related to this engine defect.
The following Hyundai-Kia vehicles are affected by the oil consumption lawsuit:
- 2012-2020 Hyundai Elantra
- 2009–2018 Hyundai Genesis Coupe
- 2019-2021 Hyundai Kona
- 2020-2021 Hyundai Palisade
- 2010-2012 and 2015-2021 Hyundai Santa Fe
- 2009-2010 and 2015-2021 Hyundai Sonata
- 2011–2021 Hyundai Sonata Hybrid
- 2010-2013 and 2015-2021 Hyundai Tucson
- 2011-2021 Hyundai Veloster
- 2020-2021 Hyundai Venue
- 2010–2021 Kia Forte
- 2017-2020 Kia Niro
- 2011–2020 Kia Optima and Optima Hybrid
- 2012–2021 Kia Rio
- 2011–2020 Kia Sorento
- 2012–2021 Kia Soul
- 2011–2020 Kia Sportage
- 2018-2021 Kia Stinger
- 2022 Kia K5
Status of the Hyundai-Kia Oil Consumption Class Action Litigation
This is an active class action lawsuit. This suit has been brought on behalf of the Plaintiffs and a class of current and former Hyundai-Kia vehicle owners and lessees.
Cho et al v. Hyundai Motor Company, Ltd. et al. Case No. 8:22-cv-00448, was filed in the United States District Court for the Central District of California.
Hyundai and Kia Owners’ Voices
My car was driving just fine then it wasn’t accelerating right and it went into limp mode. I was about 12 miles from home. I made it but the next day on the way to the dealership the engine just died about a mile from my house. Engine light came on. I always get my oil changes on time. Dealership says engine oil is sludged due to negligence. No negligence I believe faulty engine caused contaminants and have very bad oil consumption. My theta engine was left out of the campaign and my warranty was denied.
56kish miles on my car, 2nd owner. Oil pressure light flickered on and off about .5 miles from home after 20 mile highway drive, steady on when pulled into driveway. Turned off car immediately. Have noticed excessive oil consumption but check and top off frequently. Topped off less than 200 miles prior. About halfway or less since last oil change mileage wise from what I recall. Checked oil and about halfway between bottom and top markers on dipstick. Took to dealer Monday (.8 miles from home). Oil light did not come back on. Dropped off. Dealer said light came on shortly after driving. Said problem could be caused by “aftermarket” oil filter aka not a OEM filter. Said would do oil & filter change to see if resolved. Yesterday (Thursday) said oil & filter change complete & oil light not on. Reiterated previously mentioned concern of engine failure and potential accident. Service advisor said Hyundai will not entertain engine replacement unless oil consumption gets documented. Oil consumption test to be completed after 1000 miles or until low oil levels noticed/oil pressure light illuminates. Will pick up tomorrow to see what happens. Engine is covered under newly extended warranty if failure occurs. Service advisor says nothing else was checked internally, spark plugs, etc. as this would incur engine being taken apart and extra charges prior to Hyundai “entertains” covering engine replacement etc. Although no failure has occurred yet I’m worried something will and it will result in something potentially catastrophic for not only the engine/car but myself.
Our Santa Fe is losing oil rapidly. This started around 73,000 miles. They have done an oil consumption test and then a combustion chamber cleaning, neither worked. It showed that our vehicle is consuming 1 quart of oil every 647 miles. This will cause the engine to dry out and eventually fail. They told us we need an engine replacement, but Hyundai will not cover it. They told our local dealer to reach out to our extended warranty. They may not cover it. They need more tests run, but at our expense. After researching online, I found out this is a known problem with these engines. Others have complained and they even state that this problem occurs at about 74,500 miles. I cannot believe that Hyundai is not being he’d responsible for these repairs. This is a potential hazard, especially if someone doesn’t realize they are losing oil. Most people don’t regularly check their oil between changes, this is a huge hazard. We do check ours and found the problem. Hyundai is installing faulty engines and they should have to repair them, not the consumer.
Excessive oil consumption-1-2 quarts per week Losing power almost comes to stop on highway-Dangerous Knocking noise at times from engine White smoke at times from tailpipe Rough high idling Code P1326 Code P0010 Hyundai is very aware these issues in their engines. Many complaints on Hyundai forms. Many articles written about these issues with their engines. Class action lawsuit against Hyundai about their engines. Hyundai corporate won’t help nor will the local service department at the dealer. All they want to say it’s out of warranty. Because the issue happened after 100000 mile warranty.
I purchased the car in June 2021 and took the car back within the month due to the driver door having issues locking and unlocking. Today on 2/5/22 as i was driving my car on the express way my engine light, battery light and oil light came on and my car began to shake. As i got off the express way my car cut off in the middle of traffic while i had 2 kids in the car in the city of Houston…. In October i was told that i was having oil consumption issues and was having to take my car back every 1,000 miles. And then was told that’ll it’ll be $900 to get a decombustion cleaning. I am unsure of why my car has stopped today. I’ll be back to let y’all know.
How to Join the Hyundai-Kia Oil Consumption Lawsuit
If you have experienced engine oil consumption with your Hyundai or Kia vehicles, please submit your Hyundai-Kia car complaint. Once approved, you will be added to the class action lawsuit and will be notified of important case details.
Important Class Action Updates
Last Updated on January 18, 2023
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Christopher is an internet technology expert and mechanical engineer. When he’s not at the local autocross event, he can often be found working on one of his cars. He loves nothing more than taking something apart and putting it back together again – better than before. Email me direct, or learn more about us