2025 Japan Initial Quality Study Findings

The document presents the findings of the 2025 Japan Initial Quality Study (IQS), which evaluates vehicle initial quality based on problems reported by owners within the first two to 13 months of ownership. The study indicates that overall vehicle initial quality in Japan has improved for the first time in four years, with an average of 140 problems per 100 vehicles (PP100), a decrease of 12 PP100 from 2024. Infotainment-related issues remain the most frequently reported problems, despite a slight decrease. The report highlights that design-related problems are significant, with 108.5 PP100 attributed to features that are difficult to understand or use. The study ranks Daihatsu as the highest overall in initial quality, followed by Suzuki and Honda. The document also details specific improvements in categories such as lane departure warning systems. The study is based on responses from over 20,000 vehicle owners and categorizes problems into nine areas, providing a comprehensive view of vehicle quality in Japan.