Pegaso became one of the leading European industrial vehicle makers, with significant exports to both Europe and Latin America; the Benelux, Venezuela, and Cuba were its major foreign markets, and a substantial contract to supply tactical trucks to the Egyptian Army was signed in the late 1970s.

The first Enasa produced truck, a slightly modified Hispano-Fiat 66G, was the Pegaso I, of which only a few units were made (due mostly to the severe shortages of the post-war era) in 1946 and 1947.

This was the 125 hp (93 kW) Pegaso Diesel (Z-202), nicknamed Mofletes ("Chubby cheeks") for its bulbous front end, which made its debut in 1949 and quickly established itself as the leader in the still weak Spanish truck market.

Artic tractor (Z-701), road train, and coach or 'bus (Z-401) versions soon were also available, and all together they became El camión español ("The Spanish truck"), as Enasa badges and advertisements proudly stated.

Also technically advanced was the Pegaso Z-403 Monocasco, a two-level monocoque (chassisless) coach with its 125 hp (93 kW) diesel engine mounted amidships, built between 1951 and 1957.

In these years, too, Pegaso built the more conventional Z-404 coach or urban 'bus chassis, with a striking body by Seida of Bilbao, and the Z-501 trolleybus, which featured electric equipment by Cenemesa.

The first of the series was the successful 6030-N coach, equipped with an underfloor horizontal engine and single-tyre rear axle, making it a very light yet full-length vehicle.

The operation, however, was a failure, due to the contemporary import to Spain of several tens of ex-London Transport BUT units; and only one Pegaso 8010, with a Seida body, was ever built.

This was the main OEM business of Pegaso; others were selling engines for railcars and shunter locomotives and providing running units and cab components to Barazábal, a Vitoria-based maker of special chassis for self-propelled cranes, as the aforementioned IASA, IBESA and LUNA.

Specially interesting in the railway OEM sector was the fitting in 1964 of Pegaso engines to five ex-New Haven Railroad Mack railcars operated in Asturias by Ferrocarril de Langreo.

Components were taken by train from the Barajas ENASA factory in Madrid to the Zaragoza Industrial Estate so that specialist CALSA would power their earthmover range of models until they were acquired by another large and independent new owner in 1990.

A 500 hp (370 kW) futuristic concept truck designed by Francisco Podadera, the Pegaso Solo 500, had been exhibited at the Barcelona Motor Show in 1989.