The difference between Shinkansen First Class and Second Class is not as big as one would expect but still is rather tangible. If some people can find the elbowroom in ordinary cars a bit tight, Green Cars provide more than enough for anyone to feel comfortable. The seats arranged 2+2 and boast a bit cozier headrests.

Whether the Shinkansen's first-class "Green Car" is worth it in 2026 depends on your desire for space and quiet. The Green Car offers a 2+2 seating layout compared to the 3+2 layout in the "Ordinary" (standard) car, meaning the seats are wider, have more legroom, and offer a deeper recline with built-in footrests. The cabin is also significantly quieter, as it attracts fewer passengers and is carpeted to absorb sound, making it a favorite for business travelers and those looking to relax during a long trip from Tokyo to Kyoto or Hiroshima. On average, a Green Car ticket costs about 30% to 50% more than an Ordinary ticket. While the standard cars in Japan are already incredibly clean, punctual, and comfortable by international standards, the Green Car upgrade is "worth it" during peak travel seasons like Golden Week or Cherry Blossom season, when standard cars can become very crowded. For a 2-hour journey, many travelers find the standard class sufficient, but for longer trips, the added serenity of the Green Car provides a noticeable boost to the travel experience.