NHTSA Complaint #11597715 — 2013 LEXUS CT

Early morning cold start in open loop engine starts to rattle and knock. Cleaned out EGR system, including intake manifold. Engine still rattles and knocks. Swapped out ignition coils and fuel injectors with new still and still the same thing. DTC sets after a week of troubleshooting for P0303, P0301, and P0300. Switched cylinder ignition coils and fuel injectors from cylinder 1 to 2 and 3 to 4. Same DTC sets after drive cycle. Leak down test confirms cylinder 3 has head gasket leak. Registration was just paid and was going to have it smog test. Unable to pass smog due to check engine light. I had went to Lexus dealer to have them update my car for EGR update according to TSB (see attachment) but they wouldn’t do it unless I pay $300 SMFH!!! What a day! Which engineer suggested this stupid design?!?! And wtf the EGR cooler, more like a heater, has coolant running into housing which raises the engine coolant temp. Exhaust gas may go up to a temp of 600 degrees!! Look at live data and monitor catalyst temp from OBD2. This design was to intentionally cause a head gasket failure. Blades in EGR cooler gets clogged with carbon build up, where carbon will eventually break up into chunks/pebbles that will cause pre-ignition during compression stroke, pinging the engine which will result in misfires and damage the catalyst. One of the worst designs I’ve ever encountered as a car owner. This is ridiculous that this issue has been brought up countless times from thousands of testimony’s of same incident but not even a single word for these models. CT200h and Prius years 2012-2015 have this same dam problem and everyone knows this, even the CA BAR(Bureau of automotive repair). What is it that we as car owners, who abide by the law, and pay our fair share of taxes gets this “setup to fail” deal???