The contact owns a 2012 Nissan Altima. The contact stated that while driving at an undisclosed speed and attempting to accelerate, the vehicle briefly lost motive power before slamming into gear. The contact stated that several unknown warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The vehicle was not repaired for the most recent failure. The contact stated that the vehicle was taken to several independent mechanics after purchasing the vehicle and the mass air flow, spark plugs, sensor coils, and other various engine parts and catalytic converters were replaced; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was unknown.