One problem related to engine burning oil has been reported for the 2006 Infiniti M45. The most recently reported issues are listed below.
This vehicle has a known defect in the engine rings. The defect began when Nissan motor company went to a cheaper ring manufacturer. The defective rings cause excessive oil consumption. Nissan is fighting claims on a case by case basis as not many units were sold. The cost of a remanufactured engine for this vehicle is $15,500. 00. However, even the remanufactured engines are defective as they carry the same defective rings.