Diesel locomotive were classified as DET 1 and DET 2 (). Due to shortage of petrol products during World War I, they remained unused for regular service in Germany. In 1922, they were sold to Swiss Compagnie du Chemin de fer Régional du Val-de-Travers (), where they were used in regular service up to the electrification of the line in 1944. Afterwards, the company kept them in service as boosters till 1965. Fiat claims a first Italian diesel–electric locomotive built in 1922, but little detail is available. A Fiat-TIBB diesel–locomotive "A", of 440CV, is reported to have entered service on the Ferrovie
Diesel Locomotive Factory, Marhowra US $6 billion. This multi crore rupees deal was seen as the country's first FDI in the railway sector. General Electric’s first diesel locomotive arrived in India on October 11, 2017 from the US. The factory is located at Marhaura (also spelt as Marhowrah), a town and an administrative sub-divisional area in Saran district in the Indian state of Bihar. Marhowrah is 81 km north of state capital Patna. As a joint venture company, both Indian Railways and General Electric are set to invest collectively a huge amount of US $2.5 billion for DLF. Indian Railways will hold 26% equity