2003 Infiniti Q45

The 2003 Infiniti Q45 generated 14 complaints, 1 recall, and 2 investigations, down from 22 complaints and 112 TSBs in 2002 and preceding a downward trend that reached 7 complaints in 2004 and 4 in 2005. TSB volume in 2003 normalized to 66, matching 1998 and 1999 levels, though the year breaks a long investigation drought dating to 1991, with 2004 and 2005 each also posting 2 investigations and recalls climbing to 2 and 3 respectively. Federal records show zero fire complaints and one crash complaint for 2003, with top complaint categories clustering in engine and steering, though the data does not specify root causes. Across the full model run, 2003 sits in a late-period window where regulatory attention intensified even as owner-reported complaints remained moderate. Relative to the immediate years, 2003 avoids the 2002 TSB spike and the higher recall counts of 2004-2005. For a buyer, this makes 2003 a comparatively reasonable choice within the final years of the run, though the engine-related complaint concentration and paired investigations warrant a thorough pre-purchase inspection.