NHTSA Complaint #11575209 — 2017 HYUNDAI SANTA FE

My wife was driving our kids to school and got onto the highway when the vehicle lost power. There were no warning lights before the engine failure. The engine stopped running and she was just able to coast off of the highway. The check engine light came on as well as the high temperature and other warning lights. My wife turned the car off and let it sit for a couple of minutes while she called for help. When she started the car again there was no check engine light or other warning lights. She drove the kids to school but noticed the car was lacking power. I met her at the kids school and plugged in my OBDII reader and no issues were logged on the ECU. I drove the car to the dealership and the car had very little power. The dealership looked at the vehicle and a couple of days later they told us that we needed a new engine because ours was knocking due to failed crankshaft bearings. The block, pistons, and heads were replaced by Hyundai under warranty and not available for inspection. The dealer said that they had over 20 cars at their dealership with failed engines. It took the dealer 7 months to replace the motor under warranty due to the high volume of failed engines and difficulty finding a replacement engine. Hyundai settled a lawsuit on their Theta-2 engine (4cy) however ours is a Lamda-2 engine (6cy). The vehicle never showed a low oil warning, engine knock warning, or check engine light prior to failure. We recently sold the vehicle and saw the dealership didn't report the engine replacement on the carfax (image with short block replacement). They only listed the block replacement and didn't disclose the engine replacement. I provided example from a similar vehicle on autotrader with a carfax showing similar vehicle that I believe had an engine failure without full disclosure. Hyundai has vehicles on the road that have faulty engines that don't give warnings before failure. Hyundai dealers are not reporting the engine replacements fully to avoid a recall.