NHTSA Complaint #11689224 — 2018 HYUNDAI TUCSON

Over the past nine months, I’ve been experiencing ongoing issues with my 2018 Hyundai Tucson engine and transmission. After four consumption tests and a flush confirming that the engine is burning between 0.8 and 0.3 liters of oil for every 1,000, I was informed Hyundai refuses to either repair the issue or conduct testing to determine the cause. The timeline is summarized below: •February 2025 – I was told by [XXX] my vehicle simply did not have enough oil after the last oil change; •March 2025 – I was informed an initial consumption test needed to be completed; •May 2025 – a second consumption test revealed the engine was burning more than 1 liter per 1000 and a flush was completed; •July 2025 – a third consumption test was completed, revealing that while the engine was excessively burning oil, it was not currently at 1 liter per 1000 based on that test; August 2025 – the oil light came on & I was instructed to put a liter of oil into my vehicle to make it to the certified dealer for next steps. The next steps were another consumption test. Unfortunately, because I was told to add oil to make it to the dealership, I was then informed that this added oil would alter the testing, and we had to start over. •September 2025 – I am now awaiting the results of the fourth consumption test. I have receipts for every 6 months or 7,500 of service since purchasing the vehicle., Despite the engine and transmission being under warranty, the dealership has refused to conduct testing to determine the cause of the issue or remedy the excessive consumption. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)