Lexus CT200h blown head gasket issue not yet corrected on Lexus CT200h

Some Lexus CT200h owners report experiencing issues related to blown head gaskets, which are not uncommon, particularly in the US. Symptoms of this problem may include rough idling in traffic and at low speeds, as well as misfiring in specific cylinders like Cylinder 1. This misfiring can necessitate additional maintenance, such as cleaning the EGR system and replacing spark plugs and coil packs. The head gasket's steel material is a significant factor in its failure, as it can crack or warp from frequent engine cycling, leading to leaks into the combustion cylinders. Furthermore, if coolant enters a combustion chamber due to a failing head gasket, it can disrupt proper fuel ignition, potentially resulting in shaft bending and piston issues. It is essential for owners to address these concerns promptly to prevent further damage.