NHTSA Complaint #11700988 — 2017 HYUNDAI TUCSON

Component/system: Engine / powertrain – excessive engine oil consumption. The original engine is still in the vehicle and is available for inspection upon request. On 11/7/2025 my dealer (Ourisman Hyundai in [XXX] ) added 2 quarts of oil at 90,999 miles after the dipstick showed a very low level. After that visit, we drove approximately 713 miles (mostly highway, including a college visit trip), and the oil level again dropped close to the same low point on the dipstick. On 11/22/2025 at 2:10 PM, with mileage at 91,815, the dipstick again showed a significantly low oil level. I am concerned that this abnormal oil consumption could lead to sudden engine failure or loss of power while driving at highway speeds, putting my family and others on the road at risk. This vehicle is used regularly for my daughter’s college visits and everyday transportation. The dealer has acknowledged the concern, previously performed a combustion chamber cleaning on 8/11/2025 (Invoice #XXX), and has submitted a request to Hyundai for assistance. However, a formal oil consumption test or official diagnosis has NOT yet been completed, so the exact cause is UNKNOWN. The vehicle has been inspected by the dealer, and Hyundai Motor America has opened a case, but there has been no final decision or repair yet. There have been no warning lamps or messages on the dashboard; the only symptom has been repeated, excessive oil loss between visits, verified by multiple dipstick and odometer photos. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)