NHTSA Complaint #11709175 — 2016 HYUNDAI SONATA

Subject: Excessive Engine Oil Consumption – 2016 Hyundai Sonata I am reporting an ongoing and excessive engine oil consumption issue with my 2016 Hyundai Sonata that I believe may represent a safety defect or other significant reliability concern. The engine is burning oil at a rate far beyond normal expectations (requiring frequent top-off well below recommended mileage intervals), resulting in dangerously low oil levels while driving. I have maintained the vehicle per manufacturer recommendations and documented oil add-ins and dealer visits, but the problem has worsened over time. Despite presenting this problem to my Hyundai dealership, they have declined to authorize engine cleaning or further corrective action due to the mileage. I am struggling with high oil consumption and potential risk of engine failure while driving. This issue is not unique to my vehicle — numerous similar complaints exist in Hyundai forums and in other owners’ submitted complaints (e.g., reports of more than 1 quart consumed every ~500–1,000 miles and sequences of denied repairs) which suggests a broader pattern of oil consumption failures for this model year. Auto Safety +1 I believe this may represent a safety defect because loss of engine oil can lead to engine seizure or failure without warning, increasing the risk of a crash or injury. Please review this complaint, add it to the NHTSA vehicle database, and contact me if further information is needed.