, the railway operates a fleet of 12 single-car 400 series diesel railcars (numbered 401 to 412) and one 500 series diesel railcar (numbered 501). File:Heichiku 401.jpg|400 series DMU car 401 in August 2007 File:Heisei Chikuho 401-402 COTO COTO Train 20201009.jpg|400 type diesel train 401 + 402 "
Coto Coto Train" File:Heichiku 501.jpg|500 series DMU car 501 in March 2008 File:Heisei chikuho railway kiha 2004.jpg|Former Hitachinaka Seaside Railway KiHa 2004 in December 2016 In 2016, the railway purchased former KiHa 2000 series diesel rail car KiHa 2004 from the
Hitachinaka Seaside Railway in
Ibaraki Prefecture, which was withdrawn from service in December 2015. In 2019, the
Coto Coto Train started as a new touristic service in the
Fukuoka Prefecture.
Former rolling stock File:HCR DMU 106.jpg|100 series DMU car 106 in December 2007 File:Heisei Chikuho DMU 202.jpg|200 series DMU car in December 2007 File:Heichiku 304.jpg|300 series DMU car 304 in March 2008 The former 300 series DMU cars operated by the railway were withdrawn December 2010. Car 303 was shipped to
Myanmar, and car 304 is retained in operating condition for use on special driving days by members of the general public. ==History==