2013Revenue service begins on 16 March on new Super Komachi services; the seven-car E6 runs coupled to E5/H5 sets and initially operates at a maximum 300 km/h on the Tōhoku Shinkansen (130 km/h on the Akita Shinkansen).
2014From the 15 March timetable revision the E6 has replaced all E3 series trains on Komachi services and the maximum Tōhoku Shinkansen speed is raised to 320 km/h; the service name reverts to Komachi. The type is awarded the 2014 Laurel Prize in May.
2022Set Z9, coupled with H5 series set H2 working Yamabiko 223, derails during the 2022 Fukushima earthquake between Fukushima and Shiroishi-Zaō with no injuries; the set is subsequently withdrawn.