Catalytic converter failure with oil consumption
ENGINE
11 NHTSA complaints · 2023-05 → 2026-07
“This car has a GDI engine, which is now known to be defective due to excessive oil consumption. I bought the car used, with Hyundai's certified inspection before selling it to me. While my daughter was driving the car on the highway, the engine suddenly balked and stopped.…”
“Like many of the other complaints, in 2 years I have now replaced 3 catalytic converters. Everything will be fine and then BAM car stops working. No one can find any other issues. The car is in the shop again after the engine misfire light came on.…”
“I started burning oil and was going through a quart of oil every 150 miles, then due to the excess oil consumption my catalytic converter went out.”

