2014 Hyundai Sonata: excessive oil consumption

Filed Oct 2, 2025 · CA

My car has had excessive oil consumption for over a year. Hyundai looked at it. Did something to fix it for a couple months and now it’s back worse then ever and they don’t want to do anything about it.

Filed Mar 13, 2025 · Engine · 62,000 miles · AZ

The contact owns a 2014 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, and the vehicle went into LIMP Mode. The vehicle was taken to the dealer, who retrieved DTC code P1326 for the knock sensor detection system (KSDS). The dealer performed a software update, but the failure persisted. The vehicle was taken back to the dealer for an oil consumption test, which the vehicle failed. The contact had an independent mechanic replace the knock sensor and spark plugs; however, the failure recurred. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 62,000.

Filed Feb 19, 2025 · Engine · 31,000 miles · VA

The contact owns a 2014 Hyundai Sonata. The contact stated that the vehicle was experiencing excessive oil consumption, and the low oil pressure warning light failed to illuminate as needed. The contact stated that upon starting the vehicle at the gas station, the vehicle made an abnormal sound. The contact checked the oil level and became aware that there was no oil in the engine. There was no warning light illuminated. Additionally, the contact stated that while driving at an undisclosed speed, there was dark smoke coming out of the exhaust pipe. The contact pulled over to the side of the road, where the contact became aware that there was no oil in the engine. There was no warning light illuminated. The vehicle was taken to the dealer but was not diagnosed or repaired. The dealer advised the contact to check the oil level daily. The dealer informed the contact that the engine replacement was not covered under warranty. The manufacturer was notified of the failure and a case was opened. The manufacturer referred the contact to the dealer for assistance. The failure mileage was approximately 31,000.

Filed Dec 9, 2024 · Engine · FL

To Whom It May Concern, I am writing to express my concern regarding my 2014 Hyundai Sonata, Vehicle Identification Number (VIN): [XXX] , which is currently experiencing excessive oil consumption. I have recently become aware of Recall Campaign 162, which addresses a manufacturing defect that can lead to premature engine wear and related issues. Despite regular maintenance and proper care, my vehicle consumes an abnormal amount of oil, causing me to frequently top off the oil between oil changes. This not only increases my maintenance costs but also raises serious concerns about the safety and reliability of my vehicle. **A trusted service provider has confirmed that the oil consumption in my vehicle is abnormal and is likely related to the defects outlined in Recall Campaign 162.** As stated in the recall, the machining errors during the engine manufacturing process can restrict oil flow to the bearings, leading to premature bearing wear. Although my vehicle does not currently exhibit any visible oil leaks, the oil consumption issue suggests underlying damage that could potentially lead to engine failure. Considering the potential risks and the known issues with the Theta II engine, I kindly request that my vehicle be inspected and, if necessary, repaired under the terms of Recall Campaign 162. I urge you to address this matter promptly to ensure the safety and reliability of my vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 8, 2024 · Engine · GA

Engine stopped running while driving. Taken to Hyundai for theta ii settlement. Claim denied due to exception negligence. Discoloration found on cam. Car burned 1 quart of oil every week or two which confirmed with independent mechanic can cause discoloration. Claim denied without cause.

Filed Feb 26, 2024 · Engine · NY

This car burns oil at the rate of a quart every 300 miles.I have had it at the dealer several times and Hyundai has been no help at all. Their final recommendation was to replace the engine and I would have to pay for this repair.

Filed Oct 25, 2023 · Engine · 110,000 miles · NJ

The contact owns a 2014 Hyundai Sonata. The contact stated that while the vehicle was at an independent mechanic for an oil change, the contact was informed that the engine oil level was low and there were metal shavings in the engine oil. The independent mechanic referred the contact to the dealer for assistance. The vehicle was taken to the dealer, where a second oil change was performed. The dealer also performed three oil consumption tests every 1,000 miles. In the first oil consumption test, the engine oil level was 2 1/2 quarts less. In the second oil consumption test, the engine oil level was 1 quart lower, and in the third oil consumption test, the engine oil level was 1 1/2 quart lower. The dealer informed the contact to return for the fourth oil consumption test after another 1,000 miles. The vehicle was not repaired. The manufacturer was made aware of the failure. The contact stated that the vehicle was previously repaired under the federal safety agency Campaign Number: 17V226000 (Engine and Engine Cooling); however, the failure recurred. The failure mileage was approximately 110,000.

Filed Jun 15, 2023 · Engine, Fuel system · KY

My engine is burning oil and the mechanics are telling me it is very unusual for this to happen, there is a recall on my type of car and engine.

Filed Apr 23, 2023 · Engine · TX

On our way back home from a road trip, the Sonata lost horsepower and I was only able to drive at about 40 mph (on highway). Once we reached the next town, stopped at an AutoZone since the check engine light came on. Tested the issue and it looks like the car went into safe mode and there was an issue with engine oil consumption. Added more oil and continued our way home. We were stopping about every hour to "rest" the car for about 30 minutes and recheck oil levels. After the 30 minutes, we continued on our way home. Once we pulled up tp our home, the engine died. We were fortunate that it didn't happen on the road. We haven't been able to turn the car back on. It has been like this since July 2022. Sitting in our driveway. We have contacted the dealership where we purchased the car and they refuse to have the car towed to their location and they won't even look at our vehicle. Currently, our VIN is not coming up with the engine recall when I search it here but it looks like our vehicle is also affected by that recall. We did receive a notice previously.

Filed Mar 12, 2023 · Engine, Fuel system · TN

The car used up to 4 quarts of oil per week with just driving when necessary. It burned oil and blew it out under the hood.

Filed Dec 19, 2022 · Engine · FL

In the GDI engines, the fuel is injected into a camshaft-driven high-pressure pump and use a higher than normal compression ratio for increased power as well as “dished” pistons for increased combustion in the cylinder. But GDI engine defects allegedly cause oil consumption, restricted oil flow, sudden stalling, engine failures and non-collision fires. The plaintiff says Hyundai ramped up production and got in a rush which caused the workmanship to suffer when the GDI engines were created. Engine blocks, pistons, connecting rod bearings and other components are defective due to the workmanship. By failing to fit together, the engine components allegedly fail prematurely which causes metal debris to travel through the engine oil. Contaminated oil then causes a lack of engine lubrication which damages the GDI engines

Filed Dec 17, 2022 · Engine · IL

Car has an oil consumption issue. I noticed noise coming from the engine, checked my oil and found its was empty. I brought my car into the dealer and was told about the oil consumption suit, I was out of warranty and that hyundai won't do anything for me because I am not the original owner. I was told later from another auto shop that I was given false information because this is a campaign. I am the 2nd owner of this vehicle.