Tokyo International Auto Parts Exhibition, Japan

The International Automotive Aftermarket Expo (IAAE) in Tokyo, Japan, is a key industry event in Japan that focuses on the automotive repair, maintenance, and aftermarket sectors. It is also a sizable, specialized auto parts exhibition in the East Asia region. In 2025, the expo will feature an exhibition area of 30,000 square meters, attracting over 30,000 professional visitors and bringing together 680 exhibitors from around the globe. As a leading platform for the automotive aftermarket in Japan, IAAE is committed to providing the industry with cutting-edge trend insights and efficient networking opportunities, and actively promoting innovation and development within the sector.
The Japanese auto parts market is characterized by high concentration and technology-driven innovation. Local automakers such as Toyota, Honda, and Nissan dominate the supply chain, creating a vertically integrated, pyramid-like structure. Leading component suppliers like Denso and Aisin hold globally prominent positions. For four consecutive years, Denso has topped the global ranking of automotive parts brands. Its core products—including powertrain systems, electronic control systems, and thermal management systems—are deeply intertwined with automakers like Toyota. Best-selling components include engine parts, transmissions, batteries for new-energy vehicles, and intelligent driving sensors. In particular, demand for hybrid and electric technologies has been growing significantly.
The Japanese auto parts market is also dominated by domestic brands, and demand for OEM-supplied components is concentrated in the areas of powertrains, electronic controls, and new-energy technologies. Brands such as Toyota and Honda rely heavily on core components—including transmissions, spark plugs, and fuel injection systems—provided by suppliers like Denso and Aisin Seiki. Demand for intelligent driving sensors (such as millimeter-wave radar and cameras) and onboard ECUs has grown significantly. Leveraging Japan’s deep-rooted car-modification culture, there is also strong demand for imported modification parts and personalized accessories. Japanese consumers place particular emphasis on substantial power enhancements and an optimized driving experience; among imported products, performance modifications such as exhaust systems, air filters, and suspension systems are the three best-selling categories. In terms of exterior styling, personalized accessories like license plate frames, window sun visors, and car stickers are hot sellers on e-commerce platforms, with clearly seasonal demand—for instance, snowproof covers see higher sales during winter. Practical accessories such as emergency jump starters, tire-pressure monitors, and in-car vacuum cleaners have become fast-growing product categories on Amazon Japan in recent years.