Kia Sportage loss of power problems

Filed Nov 3, 2026 · Engine · KS

My vehicle experienced a catastrophic engine failure, losing power on the roadway. The vehicle is currently located at the Kia dealership, and I have been provided a formal Repair Order showing an active Diagnostic Trouble Code (DTC) P1326. Kia Corporate and the dealership are currently denying coverage under the In re: Hyundai and Kia Engine Litigation Class Action Settlement, claiming that the "VIN shows clean with no open issues." This is a fundamental misinterpretation of Kia's internal database. The VIN shows "clean" because the mandatory Product Improvement Campaign PI1806 (Knock Sensor Detection System / KSDS) was successfully completed on my vehicle on November 13, 2019. I hold physical, printed proof of this completed campaign from a certified Kia dealership. Under the terms of the court-approved settlement and Kia's own Technical Service Bulletins (TSBs): 1. Completion of the KSDS update (PI1806) qualifies the vehicle for a Lifetime Short-Block Warranty Extension against connecting rod bearing failure. 2. An active or history P1326 fault code mandates that the dealership perform a digital Bearing Clearance Test (BCT) and submit a Prior Authorization (PA) package to corporate for an engine replacement. By refusing to look at the historical campaign completion data and denying my claim based on a "closed/clean" status, Kia is actively violating the court-mandated terms of the settlement.

Filed Nov 2, 2026 · IL

I am filing a safety complaint regarding our 2023 Kia Sportage, VIN [XXX], with approximately 51,331 miles. The vehicle began experiencing shaking and vibration while driving at speeds below approximately 40 mph. The check-engine warning light also illuminated. This raised serious concerns about the vehicle's reliability and safe operation, particularly because my daughter regularly drives this vehicle to and from school. I am concerned about the possibility of an unexpected loss of power, breakdown, or other mechanical failure while she is driving. On XXX, the vehicle was inspected at Napleton's River Oaks Kia in [XXX]. According to Repair Order #XXX, diagnostic testing confirmed engine misfires in cylinders 2 and 4. The technician swapped ignition coils, performed additional testing, and documented that the misfires returned. Carbon buildup was identified on the cylinder 2 spark plug, and all four spark plugs were replaced at a cost of $406.17. Although the shaking and vibration stopped following this repair, the underlying cause of the misfires remains a concern. I subsequently learned about an investigation involving alleged defective fuel injectors in certain 2023 Kia Sportage vehicles and Kia Technical Service Bulletin FUE068. I do not know whether our vehicle has a defective fuel injector, and the dealership's invoice does not indicate whether the injectors were tested. I am requesting that the federal safety agency review this incident to determine whether the engine misfires could be associated with a broader vehicle safety defect. The vehicle has been inspected by an authorized Kia dealership, and the repair documentation is available upon request. The original spark plugs' availability for inspection is UNKNOWN. My primary concern is the safety of my daughter and other motorists should a similar malfunction occur again. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 8, 2026 · Engine · NC

The Hydraulic Electronic Control Unit (HECU) and electrical system malfunctioned, causing a severe short circuit, total power collapse, and an engine compartment thermal event (heavy smoke). The vehicle has an open, incomplete federal safety recall (the federal safety agency 22V051 / Kia SC227) for this exact fire and short-circuit hazard. The vehicle is intact, unmodified, and available for inspection upon request at the dealership. My safety and the safety of other motorists were put at severe risk. The vehicle suffered a catastrophic electrical shutdown while in motion on a public roadway. The sudden loss of engine power, power steering, and power brakes created an immediate collision risk. Smoke pouring from under the hood exposed occupants to toxic fumes and an imminent risk of a vehicle fire, forcing an emergency roadside evacuation. The authorized Kia dealership confirmed a total failure. The technician noted the engine is locked up and cannot be rotated manually. The diagnostic report reveals a cascading electrical/system collapse: the starter is completely dead (only clicking), and codes P0014 (Exhaust Camshaft Timing) and P0299 (Turbocharger Underboost) were thrown. This combination of an inoperable starter alongside timing and boost system corruption directly aligns with a sudden, catastrophic voltage drop and short circuit under the hood. The car was inspected by the dealer's technician. They recommend a $12,000 out-of-pocket engine, starter, manifold, and turbo replacement by citing an unrelated, missing class-action software update (KSDS), actively ignoring the open safety recall and the thermal symptoms. There were no long-term warning signs or prior symptoms. The symptoms appeared suddenly and concurrently at the moment of failure. Immediately before the vehicle died, smoke began pouring from the engine compartment, and the dashboard lights flashed before the car died.

Filed Sep 25, 2026 · Acceleration, Engine · TX

While traveling at highway speeds on the freeway, the engine experienced a sudden, catastrophic failure, causing the vehicle to lose power and violently force itself into an emergency low-speed "limp mode." This created an immediate, severe collision hazard with surrounding high-speed traffic. The vehicle is a 2017 Kia Sportage with a 2.4L Theta II engine, which had previously received the mandated KSDS safety software flash. The authorized dealership (Southwest Kia) refused to honor the safety recall and lifetime warranty parameters for this engine failure, instead classifying the issue as a "burnt valve" to deny coverage and forcing an out-of-pocket retail customer charge of $6,864.49 for a full engine assembly replacement.

Filed Aug 13, 2026 · TX

Main 12V electrical system failed completely. The engine stalled, the entire dashboard blacked out, and all auxiliary safety power was lost. The vehicle is currently located at Parkway Family Kia and is fully available for inspection. At rush hour freeway speeds, the engine stalled and total electrical failure occurred. Navigating across active lanes without engine power or power steering was extremely difficult. The total blackout killed my hazard lights, preventing me from warning other high-speed drivers. The dead car blocked an active lane on the feeder road, and an inattentive driver nearly struck my stalled, unlit vehicle. With zero hazards, I had to abandon the car and flee to the roadside to avoid a rear-end collision. Additionally, all passenger doors permanently locked, creating a severe entrapment hazard. Not yet. The vehicle was towed to Parkway Family Kia on Tuesday and is currently awaiting an official manufacturer diagnostic inspection by their service technicians. No advance symptoms prior to the day of the incident. At the moment of failure, the dash suddenly lit up with multiple warning lights. Within a tight 1 to 2-minute window, I completely lost power steering, making the vehicle extremely heavy and difficult to maneuver off the highway. Immediately after those 2 minutes, the dashboard and all electrical components went completely dark.

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 7, 2026 · Electrical, Steering · IN

I own a 2015 Kia Sportage VIN in detail. On 7-2-2026, an authorized Kia dealer completed the anti-theft ignition campaign. Within days of that repair, my daughter was driving at highway speed when the ignition moved from the ON/RUN position to ACC. The engine shut off, resulting in loss of power steering and brake assist. Fortunately, she was able to safely pull over. The servicing dealer has stated that the ignition's ability to rotate from RUN to ACC with minimal pressure is normal and that the vehicle is safe. However, because this incident occurred immediately following the anti-theft campaign and involved a loss of engine power while driving it appears there could be a casual impact.

Filed Jul 7, 2026 · TN

Vehicle suddenly entered recall limp-mode due to the ongoing engine campaign. Prior to this, the vehicle had immaculate maintenance records and zero driveability issues. The franchise dealership performed a short-block engine replacement under the safety recall, rushing the complete powertrain swap in less than a single afternoon.The dealership subsequently returned the vehicle in a dangerously malfunctioning and incomplete repair state. At delivery, the Check Engine Light was actively illuminated, and the car exhibited severe acceleration stumbles, power loss under load, and engine misfires (driving "punchy"). Because I am a non-mechanic, I gave the vehicle one week to settle, but the life-threatening acceleration stumbles persisted.Upon immediate return to the service center, the technician (Nathaniel) formally diagnosed failing intake manifold "butterfly" valves (Variable Charge Motion assembly). Nathaniel explicitly admitted to me that this auxiliary component failure was directly caused by the mechanical extraction and engine replacement process. Despite admitting their labor caused this defect, the dealership refused to complete the safety repair, demanding a fraudulent $900 out-of-pocket payment to correct it. Management then falsely claimed a simple manifold service would take two full days—directly contradicting their rushed afternoon engine swap.The dealership released the vehicle back to me with no confirmation of safety or roadworthiness. I escalated this to Kia Corporate Customer Care, but they officially responded via email refusing to intervene or facilitate any auxiliary repairs. Out of absolute necessity as a single mother working 12-hour shifts, I am forced to drive this vehicle short distances. It remains a major safety hazard due to unpredictable stumbling, chronic cylinder misfires, and high risk of sudden stalling in active traffic, leaving a federal safety recall completely incomplete. I have invoices and emails if needed

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 Jul 2, 2026 · Body, Electrical · GA

I am reporting two separate safety-related failures on this low-mileage vehicle. The first occurred at 2,431 miles while driving on the highway. The vehicle suddenly lost propulsion and coasted with no throttle response, and multiple warning lights and messages appeared simultaneously, including braking, electronic parking brake, and driver-assistance warnings. A sudden, unexpected loss of power at highway speed creates a serious crash risk, including rear-end collision, particularly with faster or following traffic. The vehicle was taken to an authorized Kia dealer on 3/9/26 and returned on 3/19/26 after wiring/connector-related work. The second failure occurred at 4,658 miles when the panoramic sunroof glass suddenly shattered while the vehicle was in motion. A spontaneous glass failure while driving is a safety hazard: had the interior sunshade been open, falling glass could have struck rear-seat passengers, and shattering glass while driving can cause driver distraction and loss of vehicle control, as well as a road hazard to surrounding vehicles. The vehicle was taken to the same authorized Kia dealer on 4/1/26 and remained there until 5/21/26. The sunroof was not repaired. The dealer's repair order states that it "cannot identify a specific outside object or cause" and that "no damage was found clearly identifying an external object as the cause," which is consistent with a spontaneous glass failure rather than external impact. Despite this, warranty assistance was denied on the basis that an outside impact "could not be ruled out." I am concerned these represent defects involving the panoramic sunroof glass and/or the vehicle's electrical and safety systems. Both failures occurred well under 5,000 miles and within months of each other. Across the two repair visits, the vehicle was out of service for approximately 60 total calendar days, including roughly 50 days for the sunroof issue, which remains unrepaired.