What is the most serious documented engine problem in 2019-2021 Hyundai Kona models?
The 2019-2021 Kona with the 2.0L Nu MPI engine can suffer connecting-rod bearing damage caused by machining debris left in the engine. Symptoms include engine knock or ticking, low oil-pressure warnings, sudden stall, and in some cases an engine-compartment fire. The usual result is engine replacement, and the recall remedy is free at a Hyundai dealer.