United States, June 26 -- Nissan has been ranked highest among Mass-Market brands in the J.D. Power 2025 U.S. Initial Quality Study (IQS), coming second in the industry overall. The prestigious benchmark of new-vehicle quality is based on owner feedback during the first 90 days of ownership.The J.D. Power U.S. Initial Quality Study, which measures problems per 100 vehicles (PP100), showed that Nissan achieved the lowest number of problems per 100 vehicles among all Mass-Market competitors - demonstrating significant improvements in quality and customer experience.Several Nissan models stood out in their respective segments:Nissan Altima - Ranked highest in the Midsize Car segmentNissan Sentra - Ranked highest in the Compact Car segmentNissa...