Vehicles Affected: Approximately 300 model-year 2017 Maserati Quattroporte and Ghibli luxury sports sedans manufactured between July 1 and Oct. 12, 2016
The Problem: The rear differential unit pinion nut may not have been properly tightened, allowing the pinion nut to loosen. A loose pinion gear may bind, possibly resulting in the rear wheels locking up and increasing the risk of a crash.
The Fix: Dealers will inspect the rear differential unit pinion nut torque and replace the rear differential unit, as necessary, for free.
Former Assistant Managing Editor-News Matt Schmitz is a veteran Chicago journalist indulging his curiosity for all things auto while helping to inform car shoppers.