2013 Hyundai Sonata: excessive oil consumption

Filed Aug 11, 2026 · Engine · AL

Excessive oil consumption. I lose 3 qt of oil every 1200 miles. I have had the required maintenance on the car and still having excessive oil consumption.

Filed Jul 2, 2026 · Engine, Transmission · GA

My vehicle began experiencing excessive oil consumption several years before the engine failed. In approximately 2019, I reported the oil consumption to an authorized Hyundai dealership and expressed concern that my vehicle might have one of the known Theta II engine defects. I was told the Knock Sensor Detection System (KSDS) campaign had been completed and that my vehicle was not one requiring engine replacement. The excessive oil consumption continued. On June 6, 2026, the engine developed severe metal knocking, misfires, and became unsafe to operate. I was concerned the engine could fail completely or lose power while driving, creating a safety hazard for myself and others. The vehicle had to be towed to a Hyundai dealership on June 7, 2026. Hyundai of Kennesaw inspected the vehicle and verbally advised that the engine failure was caused by connecting rod bearing failure. Although the dealership identified connecting rod bearing failure, Hyundai Motor America declined to replace the engine and instead advised that it would not proceed with repairs because of the settlement provisions related to the vehicle's age and mileage. As a result, the vehicle remains inoperable. I am submitting this report because I believe this engine failure presents a significant safety concern due to the potential for sudden engine failure or loss of power while driving. I am also concerned that I reported symptoms years before the failure, yet the engine ultimately failed from the same type of defect associated with many Hyundai Theta II engines.

Filed Mar 30, 2026 · Engine · DE

Engine died because oil wasn't changed, even though the car wasn't due for an oil change and no indicator flashed on the dashboard warning us that maintenance was needed.

Filed Feb 17, 2026 · Engine · NJ

It is a known issue on several makes and years on Hyundais. excessive oil consumption. burning a quart every 375 miles. at one point we had no oil in the car at all. causing a potential major safety issue lubricating parts of the engine. etc. we have contacted Hyundai several times and brought to Hyundai dealer who has confirmed issue through a test. no warning that oil was low!

Filed Mar 20, 2025 · Engine · 110,000 miles · WA

The contact owns a 2013 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated, the vehicle had been in for service just days prior to the warning light being illuminated. After a visual inspection of the oil dipstick, the contact observed that the oil level was abnormally low. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to the federal safety agency Campaign Number: 17V226000 (Engine and Engine Cooling), but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 110,000.

Filed Mar 19, 2025 · Airbags, Engine · DC

On [XXX], in Washington, D.C., my 2013 Hyundai Sonata experienced sudden engine failure, leaving the vehicle inoperable. My goodwill repair request was denied within 30 minutes, without a proper inspection of the rod bearings (a known failure point covered under the TXXI extended warranty) or the fuel pipe recall—a known issue that could pose a fire hazard. Hyundai cited suspected maintenance neglect, but I have documentation of regular synthetic oil changes. Despite having over 200,000 miles, a Firestone inspection from September 2024 confirmed the vehicle was in good condition prior to the failure. Additionally, Hyundai Theta II engines are widely known to suffer from excessive oil consumption, a defect that can lead to premature engine failure even in well-maintained vehicles. Hyundai has replaced engines in vehicles with similar mileage under the same extended warranty, yet in this case, no proper inspection was conducted before denial. Safety Concerns: The fuel pipe recall was not inspected, raising concerns about whether unresolved recall defects are leading to engine failures or fire risks. The airbag clock spring, covered under Hyundai’s TXXA extended warranty, was not inspected, despite the airbag light being illuminated, potentially affecting airbag deployment in a crash. The vehicle failed without warning lights or error messages, creating an unsafe situation. Hyundai’s failure to inspect recall-related issues before denying repairs could impact other affected vehicles on the road. I request that the federal safety agency: Ensure Hyundai properly inspects recall-related components before denying repairs. Investigate whether Hyundai is improperly denying warranty and recall-related repairs, even in cases where similar vehicles have received replacements. Determine if the unresolved fuel pipe recall and airbag clock spring defect pose broader safety risks. This issue has been reported to Hyundai corporate, but no proper inspection has been performed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATIO

Filed Feb 12, 2025 · Engine · IL

Burns excessive oil/excessive oil consumption

Filed Oct 25, 2024 · Engine · FL

Vehicle had been low on oil for multiple months and was brought to the dealership and then to independent body shop for repair. Low oil light NEVER came on, but vehicle initially leaking oil (puddle on floor under car). Car serviced every 3 months/miles. While driving on highway, engine started knocking, and the MIL (malfunction indicator light started blinking). Knocking got louder and all sensor lights illuminated. Pulled off side of road and waited for tow truck. Attempted to drive to safer location off highway to wait. Car towed home. Would not start next day. Jumped battery and MIL light came back on and knocking sound continued. Car towed to mechanic who performed diagnostic and advised that the Rod Knock was broken and engine would need to be replaced. Vehicle has approximately 130,000 miles, however was running perfectly prior to this incident.

Filed Apr 23, 2024 · Engine · NY

The engine failed. This created a risk for me and my family as it could have seized on us while driving and caused an accident. The problem was confirmed by the dealer in conjunction with the manufacturer. There were no warning lamps or messages on the dashboard. The only indicator of the issue was burning oil smell and engine shaking while driving. Additional details: The engine started burning a lot of oil close to the 10 year ownership mark around July 2023. We started putting oil into the engine about weekly, then daily around August and September. I finally took it into the dealership in October and they started an oil consumption study. From October 2023 through now in April 2024: 1. They changed the oil and we drove 1000 miles, then went back. 2. They changed the oil again and we drove 1000 miles again. 3. The third time, we went in and they charged me money to deep clean the engine and then asked me to drive the car for another 1000 miles yet again. 4. We made it about 500 miles and then took it back in after the car started shaking and making noises. Ultimately, Hyundai replaced the engine (they also charged me money) but I am concerned that other systems in the car will fail and I will continue to face safety issues and future charges as well.

Filed Jan 20, 2024 · Engine, Seat belts · NY

My 2013 Hyundai Sonata 2 recalls that Hyundai are refusing to fix. My engine has been consuming oil since 10/15/2023. 2-3 quartz oil has to be put in the car every 5 days. Some of the recalls were satisfied on 11/15/2023. I took my car South Shore Hyundai located at 360 Sunrise Hwy, Valley Stream, NY 11581 on 1/4/2024 They are refusing to replace the engine . my car was under warranty at the time of the recall. However, I never received a letter to notify me of the recall. Everything the recall states my engine has been doing. I reached out to the corporate office with no resolution. Hyundai says I have to be the original owner which is absurd. After careful research I see where they have replaced vehicles similar to this nature free of charge after consumers hired a lawyer, which I can't afford at the moment. My 23 year old daughter uses the car for work and I fear for her safety. I am replacing the fuel injectors and spark plugs today as suggested by the dealer. I am asking for help in getting the engine approval for replacement. Thank you.

Filed Sep 27, 2023 · Engine · VA

This vehicle consumes/burns oil at an alarming rate (1-2 quarts each month). I have taken it to both an independent mechanic and Hyundai, and nothing has been found to be failed. However, this is common enough with Sonatas that I was told that this is "common with Sonatas". This has been going on for well over a year. My concern is if/when the engine locks up while driving.

Filed Aug 24, 2023 · Engine · 5,500 miles · NC · crash

The contact owns a 2013 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the vehicle in front of her stopped abruptly, prompting her to slam on the brakes. The contacts vehicle was rear-ended by another vehicle, which caused her to crashed into the vehicle in front of her.The air bags failed to deploy. The contact stated that the crash caused her to hit her head. The contact was transported to the hospital by emergency services. The contact did not recall whether she had sustained a head injury. A police report was filed. The dealer was notified of the failure. Additionally, the contact stated upon taking the vehicle to a local Pep Boys for oil change, she was informed that the oil gasket was leaking. The vehicle was taken to an independent mechanic, where the oil gasket was replaced, and the oil change was completed. The contact stated that she later noticed that the vehicle had consumed 2 quarts of oil after 2,000 miles. The vehicle was taken to the dealer, who requested service records in order to perform an oil consumption test. The contact stated that the failure increased to 4 quarts of oil after 2,000 miles. The vehicle was taken to the local dealer, where an oil consumption test was performed and the contact was informed to return every 1,000 miles for additional testing. The vehicle was taken back to the dealer, who informed the contact that they could not provide assistance unless the engine was knocking. The vehicle was not repaired. The contact related the failure to the federal safety agency Campaign Number: 17V226000 (Engine And Engine Cooling). The manufacturer was not notified of the failure. The failure mileage was approximately 5,500.