The D19E, also known as Đổi mới,^[1] is a series of diesel locomotives currently used on the Vietnamese railway network.

The series is one of the most recently acquired by state railway company Vietnam Railways; 40 were in service as of 2005,^[1] 80 in 2012.^[2] The series, of the diesel electric type China Railways CKD7F, was constructed by Chinese manufacturer CSR Ziyang Locomotive Co., Ltd.

No. 901 to 920 (built 2001–2002) and 921 to 940 (built 2004) have a more angular body. No. 941 to 960 (built 2007–2008) were built with a rounded front; in No. 961 to 980 (built 2011–2012) the windows and headlights were modified and the front air intake omitted.^[2] From No. 941 the final assembly took place at the Gia Lâm works of Vietnam Railways.

On March 12, 2005, locomotive No.909 was involved in an accident Lang Co while pulling the train E1 (A.K.A SE1). 8 of the 13 coaches derailed, claiming the lives of 12 people and injuring hundreds. The result was because the train was over-speeding.

On 10 March 2015 locomotive No.968 was written off in an accident near Dien Sanh when it pulled SE5 train was in collision with a lorry on a level crossing.

On May 24, 2018, locomotive No. 927 towing the SE19 carrying 400 passengers had an accident in Thanh Hoa because of a collision with a truck, causing two deaths: driver Nguyen The Hung (born 1976) and Nguyen Xuan De (born 1985) The accident investigated was caused by two guards who forgot to close the barriers.

On January 27, 2022, locomotive No. 946 hauling the SE4 was involved in an accident where the train smashed into a lorry carrying wood at Km 46+270 which made a driver injured.

On January 28, 2023, locomotive No. 908 pulling the train SE5 was damaged in an accident in Cho Tia, Hanoi, when the express collided with a truck that was stuck on level crossing.

• D19E-951 at Diêu Trì station on February 15, 2011
• D19E-968 at Đà Nẵng station on May 7, 2014 – Note different windows and headlights