Two Nissan vehicles were segment leaders in the 2012 J.D. Power and Associates Vehicle Dependability Study. Frontier was the highest-ranked midsize pickup and Murano was the highest-ranked midsize crossover.

The study measures problems experienced during the past 12 months by original owners of three-year-old (2009 model-year) vehicles. Overall dependability is determined by the level of problems experienced per 100 vehicles, with a lower score reflecting higher quality.
The 2012 Vehicle Dependability Study is based on responses from more than 31,000 original owners of 2009 model-year vehicles after three years of ownership. The study was fielded between October and…