NHTSA Complaint #11507703 — 2017 KIA SORENTO

It is an engine failure thru excessive oil usage. My oil light has never came on and Dealer nor KIA can tell what point does it suppose to come on. My vehicle has 90,000 miles and I put 6 quarts of oil between 4500 miles oil change. I just completed a oil consumption test in which it was down 2.5 quarts within 1000 miles. Then I had to pay $654 for a compression test. They say the test failed and the pistons are worn. Because they are worn, they say repair is not covered. I purchased a KIA Certified vehicle with an extended warranty and they say engine is not covered because the pistons are worn not broken. I say the pistons are worn because it may have been the lack of oil causing the extensive friction on the pistons. Is it mandatory for the car manufacturer to have an oil level warning or minimum standard that all of them should follow? They told me that my engine will die soon and a new engine is $12,000.00. I believe the public should be aware of their intentional engine failure caused by excessive oil usage by not giving a low oil notification. I have had my oil changed at the same dealership since I purchased it. I paid $2500 for an extended warranty in which they do not honor. I paid $2500 plus interest for a service that is not being honored. A warning light for low oil should be mandatory, manufacturer should be liable for not having a warning light in place. Service manager and service all played dumb stated nobody never asked about an oil warning light. Please Help!!! I still owe $15,000 on the vehicle.