2017 Hyundai Sonata engine problems

“On the morning of XXX, when starting my vehicle, I noticed that the oil warning light was flashing. The outside temperature was in the low 40s, which immediately raised concerns about the vehicle's engine and oil pressure. I promptly shut off the engine and checked the oil level. The oil level was full, as I expected, because I had checked it the previous day. I have consistently paid close attention to the oil level in this vehicle because it has consumed oil throughout the entire time I have owned it, beginning shortly after I purchased it brand new. Due to this ongoing issue, I make it a point to keep extra engine oil in my trunk so I can monitor and maintain the proper oil level. On XXXX, I stopped by the Joe Holland Hyundai Service Department and spoke with [XXX] about the oil warning light continuing to flicker while driving. Unfortunately, no resolution or explanation was provided. However, [XXX] did acknowledge that the engine in my vehicle had previously been identified on a problem list due to a machining error that occurred during the engine manufacturing process. This acknowledgment is particularly concerning because it suggests that Hyundai was…”

“I had recently taken my 2017 Hyundai Sonata in for an Engine Diagnostic check at the Bel Air Hyundai dealership, (10/15/26) worth $199.99 for an hour of maintenance, after experiencing sudden jolts when powering on and driving, needing additional time warming up. My initial thought was that the temperature gauge had gotten stuck again, or that the sensor needed to be fixed. I suggested that the dealership check for this issue before doing the diagnostic to see if it was still needed afterward. My service advisor, Kevin, said that this is included as part of the diagnostic testing. I figured it would be in the best interest for my vehicle to do an initial check, regardless of cost, to avoid further complications down the line, yet the 9 C2 update was performed without my consent or knowledge beforehand. They performed a multipoint inspection, which shows on record I had it done months prior during my last oil change, free of charge on both occasions, yet it only shows the vehicle, not engine. I have the lifetime warranty as advertised, covered by Zurich, which my service advisor showed me on his computer. However, he said my concern was a mechanical issue, not…”

“I am reporting an unaddressed, critical safety defect involving the Theta II engine in my 2017 Hyundai Sonata. The engine has developed a severe internal metallic knocking noise consistent with connecting rod bearing failure—the exact manufacturing defect associated with Hyundai's major engine recall campaigns (such as Recall 198 / Campaign 966)”

“The vehicle suffered a sudden, catastrophic internal mechanical engine failure out of nowhere without any warning lights or previous symptoms. An inspection of the engine cylinder revealed a physical hole blown through the top of the Cylinder 2 piston, causing immediate and complete loss of engine compression. This sudden structural failure caused the vehicle to completely lose all propulsion and stall unexpectedly while in operation, creating an immediate, severe safety hazard on the road.This vehicle features Hyundai's 2.4L Theta II Gasoline Direct Injection (GDI) engine, a family with a well-documented history of manufacturing defects, severe oil consumption, and catastrophic internal structural failures. Because this failure occurred instantly and without a progressive warning, it put occupants at risk of a severe rear-end collision or stranding in an unsafe traffic pattern. I am filing this safety report because the catastrophic destruction of the internal engine components presents a persistent and dangerous hazard to public safety.”

“We had a recall done, Campaign 92C, and every since then the car drives horrible. It's worse when cool, it sputters, and hesitates especially when excellerating. Even after warmed up it seems to slam in and out of gear at low speeds, even when foot is not on the gas. The drive is choppy. The dealership told us to drive it and let the transmission "learn" our driving patterns, but it has not resolved itself. Before campaign car ran smooth, now shuttering and sputtering.”

“I am writing to report a direct violation of the Theta II Class Action Settlement terms by Hyundai Motor America. This morning , I emailed an Executive Case Manager explicitly explaining that my 2017 Sonata has an active P1326 code, has the 2019 KSDS update, and requires a mandatory diagnostic under NHTSA Recall 17V226 that cannot be denied due to a salvage title. Instead of replying to my facts, the Case Manager Kathy gave me a hard denial falsely framing my federal recall safety request as a "voluntary goodwill warranty" issue to justify her rejection. Please help me in getting authorization my car with Hyundai dealership in Plano Tx to run the bearing rod test and get it fixed.”