One problem related to engine shut off without warning has been reported for the 2007 Infiniti G35. The most recently reported issues are listed below.
Driving on the highway in fast lane during evening commute, my infinity malfunctioned - random engine shutoff. This malfunction disabled all features of vehicle - lights, steering, brakes, airbags, and more. (the previous section only let me select three affected parts) luckily I was able to coast vehicle to a stop on the inside of the highway without causing an accident, being injured myself or worse. Had to have vehicle towed from scene. Research shows that a variety of infinity vehicles from 2005 to the current year have experienced this same malfunction issue and there seems to have been a recall issued for later years. I contacted infinity regarding this issue and was told that my vehicle not covered. Request that NHTSA investigate cause of random shutoff (some sort of fuel sensor) and issue a recall for all infinity years/models to correct this issue. Infinity suggests I bring vehicle in for diagnosis but will be subject to hourly rate for diagnosis and replacement parts/repairs.