NHTSA Complaint #11482093 — 2017 INFINITI Q60

Initial fault was no cabin heat. Service department determined coolant was low. Coolant system passed pressure test. Coolant was found to be leaking into cylinders past head gaskets. After head gasket replacement, engine broke down on highway and car was towed to dealership. Catastrophic overheat damage in lower end. Engine long block was replaced to correct. Multiple identical/similar occurrences reported on infinitiq60.org. Failure is normally failed head gasket or porous engine block. 2017 models especially affected. Infiniti consumer affairs completely unresponsive if vehicle is outside powertrain warranty. Safety at risk due to potential engine failure and vehicle stoppage at any time. No indications received at any time indicating failure. Temp gauge never indicated spike or failure. Only indication was lack of cabin heat, but coolant was basically empty. The problem was reproduced by dealer after servicing coolant and seeing subsequent engine internal consumption of coolant. Vehicle was inspected by Infiniti service department and MPP third-party warranty company. All vehicle service records since purchase are available.