2018 Hyundai Santa Fe: excessive oil consumption

Filed Jul 21, 2025 · Electrical, Engine · TX

The oil pressure switch has a faulty seal causing oil to leak out onto the engine block. This causes oil on the underbody and ground, smoke amd smell from oil on got surfaces, knocking noises from the engine, reduced power or hesitation, illumination or the check engine light and oil pressure light, high speed stall, and will also cause fire in the engine compartment resulting in death or sever injury. I have taken my car to the Red McCombs Hyundai dealership in San Antonio TX for repair and they have confirmed that it is the oil pressure switch seal that failed. The oil leak has also damaged electrical components causing a malfunction in the dash cluster and steering wheel control.

Filed Apr 9, 2025 · Engine · WI

Significant oil consumption and engine noise.

Filed Nov 19, 2024 · Engine · RI

The contact owns a 2018 Hyundai Santa Fe. The contact stated that upon checking the engine oil dipstick, the dipstick was abnormally dry. No warning lights were illuminated. The vehicle was taken to the dealer, who performed an oil consumption test over 1,000 miles, and found that the engine was consuming 2 quarts of oil. The contact was informed that the excessive oil consumption could cause damage to the engine. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was unknown. The VIN was not available.

Filed Jul 11, 2024 · Engine · MA

June 21, 2024. During travel at high speed (70mph) on NYS Thruway, engine began making loud noise. sounded like something was loose and flapping. WITHOUT WARNING- no instrument warning lights came on, engine seized and power stopped. At no time during my drive did I observe any instrument warning lights. I was able to get over to the side of the road. The temperature gauge remained unchanged. I was concerned about fire in the engine and got as far away from the car as possible. I was 200 miles into my 300 mile journey. After waiting over an hour to have my car towed to the dealer, I was told that there were 3 Hyundai's with similar issues the week before and that the car would likely need an engine replacement due to "excessive oil consumption". This issue is a safety risk as it could have resulted in catastrophic engine fire, as well as safety issues on the Thruway with other cars and lots of traffic. Engines are backordered. Dealer did a full inspection and submitted paperwork on June 28, 2024 to Hyundai for a decision on whether this is covered under warranty. I was told we would have an answer within a few hours. Have been assigned a "liason" with Hyundai and have been in regular contact. However, Hyundai has asked for an additonal time in order to make a decision. No word as of July 11, 2024.

Filed Apr 11, 2024 · Engine · MI

My Hyundai Santa Fe’s engine blew up while I was driving it and everything shut down without warning. I was stuck in the middle of a busy 4 way stop until I was pushed into a parking lot so I could get towed. There was no warning lights such as oil, engine lights, no sensors what so ever!!! It had begun burning oil and I made an appointment to get it checked but the oil was not low this time. I was told that the 3.3/6 cylinders engine isn’t in the recall list and is out of warranty at 123,000 miles so they won’t help replace the engine!! This is a $40000 vehicle!!! I’ve looked online and from what I’ve read there are many many people suffering the same issue with this engine but it’s not part of the class action lawsuit. PLEASE PLEASE HELP. I cannot afford a new engine or a new car.

Filed Apr 2, 2024 · Engine · TX

Driving at 70 mph and the car’s RPMs dropped. Coasted to exit the highway to find out the car was not accelerating as it should. Took car straight to dealership to drop it off. Have 100,139 miles on the vehicle. Was told by dealership that car was consuming oil. No check engine lights came on, no oil lights on. Nothing. No warning, no smoke, etc. have been told that the car is consuming oil. I was told when I dropped the car off on Saturday there was 1 qt of oil, and by Monday when they test drove the vehicle there was none and the engine had seized up on them in the parking lot. It has now been two weeks. The initial quote given was 11k (if warranty didn’t cover anything). The dealership submitted all maintenance records, registration and the form stating I am the only owner of the vehicle. Friday (XXX) was told warranty would pay 90% and I would be responsible for 10%, did not have an explanation as to why they did not cover all. Ask to get that information. Saturday (XXX) was told warranty would cover 95% and I would cover 5%, awesome. Agreed to get the ball rolling and order parts. Hear from service advisor on XXX, stating that the repairs are now quoted at $23k, so my portion is more. Still no reasoning why. Later found out that Hyundai has discontinued the 11k long block engines, so they are having to order short block engine + all parts to build it. The huge concern is that is ZERO warning. This could have been dangerous had I pulled out in front of a car! I know there are multiple complaints against Hyundai, so I know I am not alone. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 7, 2024 · Engine · NY

The engine has always burned oil very quickly in my opinion. The engine seized despite regular use. The vehicle was just outside of warranty so we have to pay for a new engine.

Filed Mar 28, 2023 · Engine · FL

Losing half a quart of oil every 1000 miles, that would be about 3 quarts every 6000 miles This is not normal for a 2018 car with 65700 miles on it Car had an Oil Consumption Test by dealer No warning lights have come on