2016 Hyundai Santa Fe Sport engine problems

“On XXXX, my 2016 Hyundai Santa Fe Sport AWD (VIN [XXX], ~89,151 miles) developed a flashing check-engine light while driving — an active misfire condition. An OBD-II scan pulled code P1326, Hyundai's knock-sensor detection code for connecting-rod bearing wear in the Theta II engine family, the same defect family covered by Hyundai's lifetime bearing-warranty extension under Service Campaign T6G (TSB 22-01-023H-1). The vehicle was towed to Grand Hyundai of Canton (repair order #XXX). The dealer performed the bearing clearance test (BCT, TSB 21-EM-004H-1) on XXX, and recorded only "PASS." The printed result from the dealer's own GDS diagnostic tablet shows PASS with no numerical clearance values, even though this is a measurement-based test. The knock sensor was NOT replaced, and a KSDS software update was performed. The final invoice was $0. I have asked, in writing and repeatedly, for the actual numerical clearance measurements from that test. I have not received them. What I have received instead is a contradiction: On XXX, at vehicle pickup, the dealership's service manager told my wife, [XXX], that the dealership does not have access to those results and…”

“I was driving from Tampa to Wesley chapel Fl I was going about 70 and was pushing a bit then slowed down right away then I was speeding a little back up and my car was dropping to speed by itself I pulled over to the shoulder and it was leaking radiator fluid I was trying to crank it to see if I can make it work then it started smelling bad in the car so I turned it off right away and it was Smokey”

“While driving I smelled gasoline then it turned to a burnt smell, engine turned off. Got to side of the road and engine caught fire. Firetrucks and police arrived. Car is totaled entire engine bay was up in flames. Car has been towed.”

“The contact owns a 2016 Hyundai Santa Fe Sport. The contact stated that while the vehicle was parked, there was an abnormal knocking sound coming from the engine compartment. The vehicle was towed to a dealer where it was diagnosed that there was coolant in the engine and that the knock sensor detection system needed to be replaced. The dealer made the contact aware of Manufacturer Campaign Number: 953 and stated that the vehicle was not previously serviced under the campaign, so the vehicle could not be repaired. The manufacturer was notified of the failure. The failure mileage was approximately 111,000.”

“The engine (2016 Hyundai Santa Fe 2.0L/2.4L Theta II GDI engine) suffered a catastrophic internal mechanical failure, specifically related to the known connecting rod bearing defect. The vehicle is currently un-driveable and is located at Serra Hyundai in Trussville, AL. The vehicle and its failed engine are available for inspection upon request. The engine suddenly failed and lost all power while driving at highway speeds in active traffic. I was forced to coast a dead vehicle across multiple lanes of traffic to the shoulder without any acceleration capability. Yes. The vehicle experienced a complete failure, cannot be restarted, and is currently parked at an authorized Hyundai dealership The vehicle is currently at an authorized Hyundai dealership awaiting a formal corporate inspection and evaluation for engine replacement approval. It has not been inspected by police or insurance. There were no long-term warning lamps, messages, or symptoms prior to the incident. The vehicle was operating normally until the exact moment of the failure, when the engine suddenly began knocking loudly, lost power, and stalled within seconds.”

“The vehicle is a 2016 Hyundai Santa Fe Sport. It had previously been included in an engine-fire-related recall/service campaign, and Hyundai replaced the engine between approximately October 2024 and January 2025 at about 113,000 miles. About 10,000 miles and 14 months later, the vehicle developed engine/performance problems. A Hyundai dealership service center performed about $6,500 in repairs, including installation of a new transmission, and represented that the engine and transmission had a lifetime guarantee. One day after the vehicle was returned from the dealership, the engine compartment caught fire while the vehicle was being driven. The fire rapidly escalated, the vehicle exploded/burned, and the vehicle was destroyed down to the frame. The occupants escaped, but the incident created an immediate risk of serious injury or death. The failed component appears to involve the engine, engine compartment, fuel/oil/electrical systems, transmission-related repair area, or another drivetrain component. The vehicle remains may be available for inspection depending on insurance/tow/storage status. The vehicle had recently been repaired and inspected by a Hyundai…”