2007 Dodge Nitro — 4.0L

The 2007 Dodge Nitro generated 825 federal complaints, a volume that far exceeds the 393 filed in 2008 and the single complaint recorded for 2005, while its eight recalls and three investigations also represent the highest counts in the provided year range. Across the 2005–2012 record, complaint activity spikes dramatically in 2007 before dropping to 36 in 2009 and never returning to that initial peak, with recall frequency similarly moderating in subsequent years. This positions 2007 at the apex of the model line's complaint-and-recall curve, carrying the heaviest federal footprint of any year shown. The leading owner-reported categories for 2007 are fuel system and electrical system complaints, at 138 and 130 respectively, along with 24 crash-related and 17 fire-related complaints, though the data does not specify underlying causes. Because it concentrates the generation's highest complaint, recall, and investigation activity into a single model year, the 2007 Nitro is statistically the least favorable year to purchase, and buyers would be advised to consider later alternatives with lower documented federal complaint rates.