NHTSA Complaint #11514179 — 2017 HYUNDAI SANTA FE

1. Over several documented and undocumented times since July 2021, this vehicle has consistently lost >1 quart of oil every 1k miles. 2. This issue has been confirmed by the dealerships involved several times. 3. It is identified as the Theta engine failure. It began in 2012-13 and has been a constant for Hyundai and Kia models for 7 years. 4. There were no warnings from the initial ignition vehicles system check or at any time while operating this vehicle. Even when the engine loss was measured at about 4 qts. 5. This vehicle has been through 2 complete "oil consumption" programs that measure the oil loss during three consecutive 1K mile periods. Also it has had 2 "combustion cleanings" after which a follow up 1k mile oil check found that it still lost >1 qt of oil. 6. The failure of this engine is always a concern. I have personal and anecdotal testimony of what can happen with the failure of this engine. My wife and I are both in our 70's. We are also helping our 26 year old grandson with various transportation requirements. He has spastic dysplasia cerebral palsy and is unable to walk without a cane or walker. Longer distances require a wheelchair. We cannot push that wheelchair, we cannot carry him. We are in trouble if this engine fails and we are miles from home. Also, the vehicle under went the required ECM UPDATE as required by the NHTSA at 39843 miles on January 11, 2019. This update required the installation of a module that would decrease the RPM'S of the engine if there was a failure. There are horror stories on various FB Group pages about the terror of being on a 70 mph road, in the middle lane, when the engine fails and goes immediately to 35 mph. I have a personal friend who experienced that on I-95 in Maryland and was petrified. 6. Finally, after speaking with various Hyundai Service employees, I feel that I was mistreated after the first process. When my SUV lost >1 qt after 1K miles after the cleaning, I should have gotten a new engine.