Kia Sportage oil consumption problems

Filed Oct 28, 2026 · Engine, Fuel system · OR

"While driving to work and actively attempting to pass another vehicle, the battery light suddenly illuminated out of nowhere. A short time later, while slowing down at a stoplight coming into town, the engine completely stalled out and died in the middle of a busy, active intersection. I lost all acceleration and power steering capabilities, and narrowly avoided an accident while coasting blindly across traffic to safety. The vehicle has had a chronic, active P0420 Catalytic Converter efficiency code caused by a known Kia manufacturing defect of massive, excessive oil consumption (requiring constant oil additions to maintain operation). The excessive oil burning directly fouled the exhaust and caused this sudden, life-threatening engine failure on a public roadway."

Filed Oct 28, 2026 · Engine · SC

On Saturday, XXX, while driving on XXX in [XXX], my 2020 Kia Sportage (2,4 L engine, 152,245 miles) suffered a sudden, catastrophic loss of motive power. The vehicle actively entered Limp Home Mode at high speed, dropping velocity rapidly and creating an immediate traffic hazard that my husband and I stranded 6.5 hours away from home. The vehicle was brought back to [XXX] on Sunday XXX, to Stokes Hodges Kia in [XXX], where a diagnostic scan pulled faulted code P0404. No low-oil pressure warning light or dashboard oil alerts were illuminated prior to or during the failure. The engine suffered a sudden internal mechanical failure directly relating to the vehicle's progressive, severe internal oil consumption defect, causing a severe highway safety hazard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 27, 2026 · Engine · KS

My daughter's 2020 Kia Sportage S was purchased September 22, 2025 from a Nissan Dealership with 96,574 miles on it. It dove great. She used it less than 20 miles per day on residential streets to get to and from work and to church on Sunday. It was not used for interstate or freeway driving. By June of 2026, we noticed that it was requiring more oil between oil changes. The oil level was checked at least once every other week to see if more oil needed to be added. We were adding about a quart of oil every two to three weeks although there was no evidence of excess smoke coming from the exhaust. Then on my daughter's way to work on August 13, 2026 she experienced a sudden shaking of the car and the engine light came on. She immediately pulled over and turned off the engine. We were out of town at the time so my son came to see what was wrong with the car. He checked the engine oil first and it was within the right level. The car was limped to the local Kia dealership to trouble shoot it and they said that there was evidence of rod/bearing failure in one cylinder that was causing the shaking. There is no fix for it other than to replace the engine at a dealer discounted price of $6,600. Kia corporate is offering a $1,000 credit toward the repair and the dealership is contributing $4,040 to the engine replacement. The car has 103,510 miles on it now. The Theta II 2.4 engine had an engine settlement that covered model years through 2019. Ours is a 2020 that was built in May 2019 and has the same engine that failed under the engine settlement. But ours is not covered. We are still in the process of working with the local Kia Dealership and Kia Corporate to make it right on an engine that clearly has known problems causing premature engine failures. I have owned or recommended to family members to buy Kia/Hyundai vehicles and between all of us we have had 13 Kia/Hyundai vehicles. This may be the last Kia/Hyundai vehicle that we own...

Filed Sep 13, 2026 · Engine · IL

The car engine is losing oil without any leaks being found. I got my oil changed and was told to have it done every 3k miles. Within a month of that oil change, my engine ran hot. I had all of my components checked. Radiator and coolant was fine but they found that my engine was 2 qrts short of what should be in there. I told them that the oil was just changed not even a month ago and that had to be false unless they weren't fully giving me the quarts that I paid for. They stated that this particular engine burns oil for unknown reasons as no cracks or leaks are ever found and to alleviate the issue, I would need to come in and pay for addtl qrts to be added. This is crazy and costly to owners! Kia knew that their engine doesn't perform as it should and can give way to cars overheating and potentially causing an engine fire. This should be a recall to replace the engines so that they perform as they should. This was deceitful practices that Kia set in play.

Filed Sep 6, 2026 · Transmission · MO

High oil consumption burning a quart of oil every 500-600 miles.

Filed Aug 13, 2026 · Engine · TX

2018 Kia Sportage (78,051 miles). Vehicle is part of the Kia Engine Class Action Settlement due to severe internal engine defects. The engine suffers from catastrophic oil consumption, running almost completely dry three times in less than six months with no external leaks, meaning it is internally burning motor oil at a dangerous rate.This known engine defect caused severe consequential damage to the exhaust and emissions systems. On Aug 12, 2026, a Kia dealer technician diagnosed active code P0420. The technician's video inspection stated both the catalytic converter and O2 sensors are completely "out of specification." This double failure is a direct result of the engine defect blowing excessive liquid motor oil out of the engine block and down the exhaust pipe, fouling the sensors and melting the internal catalyst.This failure happened immediately after receiving the mandatory Kia Recall SC340 update (Catalyst Overheating Protection). The vehicle is under the 80,000-mile Federal Emissions threshold, but Kia is denying coverage based strictly on a calendar time limit. They refuse to take responsibility for emissions components destroyed by their settlement-recognized engine defect.This condition poses a serious safety hazard. Driving with heavily fouled O2 sensors and a failing catalytic converter causes poor engine performance, unpredictable stalling or hesitation during acceleration, and excessive unburned fuel vapors to enter the environment and potentially the cabin. I request the federal safety agency investigate Kia’s refusal to cover secondary emissions damages directly triggered by their defective oil-burning engines.

Filed Jul 24, 2026 · Engine, Fuel system · GA

On June 14, 2026, the driver experienced sudden rough engine running followed immediately by a flashing check engine light. The vehicle was towed to the selling dealer, which has performed all prior maintenance. The vehicle is currently at the dealership and available for inspection. Technician notes show DTC P1326 was stored — the Knock Sensor Detection System code associated with connecting rod bearing wear on Kia's Theta II engine family. The technician performed an audible knock check only (none heard) and cleared the code. The vehicle was found approximately 2.5 quarts low on oil due to an internal turbo oil leak. The dealer's notes state the code "may be related" to low oil — hedged language, not confirmed causation. The dealer confirmed the turbo failure but has not performed a bearing clearance test to confirm or rule out bearing damage from the low oil condition. The dealer performed a turbocharger replacement. Despite a verbal commitment from the service manager that a bearing clearance test would follow, no such test was performed 40 days later. When the vehicle was declared ready, the service manager did not recall the commitment and suggested driving 40-50 miles as an alternative. Kia America opened a formal case last month and authorized a partial goodwill adjustment but no one has addressed the safety concern of the unperformed engine test indicated by the thrown code. Driving a vehicle with potential connecting rod bearing wear risks catastrophic engine failure, creating a serious safety hazard. This vehicle has a documented history of oil consumption prior to this incident. The engine has not been cleared for bearing damage following a significant low oil event and a stored P1326 code.

Filed Jul 17, 2026 · Engine · CT

The engine consumes excessive oil due to the known Theta II piston oil control ring defect that the manufacturer documents in its own Technical Service Bulletin ENG222, covering this engine family across model years 2011 to 2024. The vehicle loses over one quart of oil per 1,000 miles with no external leak and no oil pressure warning. The manufacturer's authorized dealer completed the entire TSB ENG222 diagnostic protocol, which is itself a controlled test designed to isolate cause. The engine was sealed, and after 1,080 miles it was 1.5 quarts low. The dealer then performed the TSB's combustion chamber cleaning. After that repair, over 1,149 miles, the engine was 1.4 quarts low. The cleaning had virtually no effect on the consumption rate. Because the protocol sealed the engine and cleaned the combustion chambers and the consumption rate remained unchanged, the protocol itself mechanically excludes maintenance as the cause and isolates the failure to the internal piston rings. This is the exact defect TSB ENG222 was created to diagnose and repair. The defect has been reproduced and confirmed by the manufacturer's own authorized dealer through this protocol, and the vehicle is available for inspection upon request. Under the TSB, these results qualify the engine for replacement. The manufacturer nonetheless denied the engine replacement, citing a lack of oil change receipts rather than any technical evidence of neglect, despite its own diagnostic protocol having already ruled out maintenance as the cause. Safety concern: an engine consuming oil at this rate risks sudden loss of oil pressure and engine failure while driving, which can cause a stall or loss of power in traffic.

Filed Jul 6, 2026 · Engine, Fuel system · MN

After fueling, vehicle idled fine with no warning lights. Once pulling onto the highway and making highway speeds, the vehicle suddenly lost acceleration, and was stranded in the highway. We required the assistance of law enforcement to direct traffic. It was 10pm and the temperatures were 35 degree below zero with the windchill. The vehicle was towed to a Kia dealership, where they diagnosed loss of compression in the pistons. The dealership stated the engine had been burning/consuming oil and that the burnt valve caused the loss of compression and sudden breakdown. This vehicle uses the 2.4L Theta II GDI engine, which has a long history of engine failures, oil consumption complaints, stalling, and class-action litigation involving sudden engine failure and loss of power. Kia denied coverage by claiming only rod-bearing failures qualify for warranty extension, even though excessive oil consumption and compression loss appear closely related to the same broader engine defect pattern. Other owners have also reported 2017 Sportage excessive oil consumption leading to compression loss and engine failure. I believe this is a serious safety defect because the engine can fail suddenly while driving at highway speed, drivers may have little warning before loss of power, oil consumption may not trigger adequate warning before catastrophic failure. This creates crash risk, roadside hazard exposure, and potential fire risk.

Filed Jun 26, 2026 · Electrical, Engine · WA · fire

I was driving eastbound in my 2012 Kia Sportage on I-82 just past Benton City MP97 at about 11AM on Monday June 22, 2026, when my engine knocked twice, the red check engine light came on, and I lost power. I pulled over off the road next to a concrete barrier that was beside a rock roadcut. My flashers would not operate, I put it into park, turned off the ignition and immediately noticed the smell of burning oil or rubber. I had 2 half gallon containers of water on my front seat, so I popped the switch, lifted the hood, used the prop rod to hold the hood up as I started dowsing the flames that were popping up on the passenger side of my engine compartment near the firewall. After using both half gallons, I ran to the rear of the vehicle, opened the hatchback, and grabbed a gallon spray bottle of water and brought that back around to the front of the vehicle. By this point the prop rod holding the hood was bending and the flames were popping back up, I pumped the sprayer and directed a stream of water with my left hand and used my right to hold up the hood as the prop rod was not working. After the fire was completely out, I returned to the rear of the vehicle, donned my reflective vest, put a portable flasher on my vehicle, and at this point a Benton County fireman in a pickup arrived - he was called by a motorist that saw me pulling over with smoke trailing my vehicle. The fireman was followed by a large firetruck and crew. They propped up the hood with a bar and inspected the motor to verify the fire was completely extinguished. They took my information and left. A Washington State Patrol arrived, assessed the scene and offered assistance, but I already had called my wife so he left me to wait for her. He told me I had 24 hours to get the car off the interstate. I had the car towed to my driveway by A&E towing at about 2:30PM. I just realized this morning that I ought to report it to you. I haven't tried to start it, but I'm sure it won't.