[3] The body design is based on the earlier 2000 series trains first built in 1997, and uses friction stir welded (FSW) aluminum alloy panels.

[3][5] Passenger accommodation consists of a mixture of facing 4-seat bays and longitudinal bench seating, and includes baggage racks next to the doorways.

[4] The seats are covered in a blue moquette incorporating the traditional Japanese seigaiha (青海波) pattern.

[4] Passenger information is provided by 7-inch (178 mm) wide LCD displays above the doorways.

[8] The cracks were mainly found on an aluminum part which connects the body of the vehicle to the bogie.