Roman Diesel is a great family tradition in the marketing of vehicles, always lived within the Fiat Group, and articulate a modern facility for sales and service to industrial customers for new vehicles Iveco, Irisbus, Fiat Professional, New Holland Construction New Holland Agriculture, Case IH, and Acerbi Viberti and used vehicles of all brands represented and marketed in Italy as Mercedes, Volvo, MAN, Scania, Renault, Daf, Nissan, Ford, Volkswagen, Citroen, Opel, Peugeot, Massey Ferguson, Landini, Hitachi, Kobelco, Doosan, Caterpillar, Komatsu, Fiat Allis, etc.. Rome, Frosinone, Latina, L'Aquila, Viterbo, Rieti.

In the thirties (1937) born to Sievit Massimo Maurizi, Fiat dealership and Viberti, and Fernando Saroch Campilli OM dealership. vehicles were then called the Fiat 621, 632 and 634, OM Taurus, Ursus and Titan. In 1975 the Fiat Group, unifying the Fiat OM, Unic and Magirus Iveco based.

Guessed in advance the potential distribution and welfare of Iveco, and Campilli Artusi (replaced at the helm of SIEVIT), who had already started working with a service company called COGEA, begin a process of integration and rationalization of great organizational effort and Financial amounting to the creation in 1982, in Capranesi, on the Ring Road to Rome, the Roman Iveco Diesel Service.

Roman Iveco Diesel Service was a great workshop for repairs and a large inventory of parts common to companies in Rome, an area of ??over 40,000 square meters of which more than 9,500 seats, where he later was transferred to the flea market called "Camionmarket". In 1990, Diesel acquires neighboring Roman system of "Chips Pai" as well as sales offices and administrative and commercial services are transferred from the headquarters in Viale Glorioso Casilina and the GRA.

In 1992 the Roman Diesel, direct about his workshops of Rome, Frosinone and Latina, promotes the establishment of CRIS (Roman Industrial Service Consortium), which now collects and coordinates IVECO 40 Authorised Workshops, with a total of over 500 skilled workers and specialized available to customers for maintenance and repair of vehicles and Iveco Irisbus in Rome and Lazio.

In 1999, the new headquarters were inaugurated in Frosinone and Latina. In 2004, the Division of Agriculture was formed to undertake the distribution for the provinces of Rome, Frosinone, Viterbo and Rieti of agricultural machinery and CASE NEW HOLLAND AGRICULTURE, brands of the Fiat group of world leaders in the agricultural sector.

From 1 January 2007 the year of its 70th anniversary the Roman Diesel has further expanded its product offering with FIAT GROUP FIAT PROFESSIONAL commercial vehicles, special vehicles and IVECO Astra Dump and machinery for earthmoving, quarrying site, and for the construction and road pavement of New Holland Construction. .

Today Roman Diesel with its 5 locations is a complex of more than 140,000 square meters, of which 18,200 are covered, with a staff of about 359 persons distributed in offices in Rome, Frosinone, Latina, Viterbo, Rieti, L'Aquila for the sale of approximately 3000 / 2 new and 1,600 used vehicles, 130,000 hours of service, 180,000 of spare parts.