Year 1963. In parallel to the country's first private sector industrialization movements, Otokar initiated the Turkey's first actual intercity bus manufacturing investment under the license of Magirus Deutz in Istanbul. Otokar manufactured the buses, the most modern intercity vehicles for the period, which are still recollected as the "Air-System Apollo".

In 1970's, Otokar once again led the way of inner city transportation system in Turkey by launching air-cooled minibuses with Deutz engine. During the same period, Turkey's largest conglomerate Koç Holding purchased the majority of Otokar shares. Within its mass transportation strategies, in early 1980's, Otokar added the inner-city bus to its product range.

In the begining of 1980's Otokar began inner city bus production and in mid-1980's Otokar manufactured the first Turkish armored vehicle as a cash-carrier.

Due to the need of Turkish Armed Forces, in 1987 Otokar has developed a new strategy for entering the military production and signed an agreement with Land Rover, UK to manufacture Land Rover Defenders in Turkey.

In early 1990's, Otokar combined its armor technology with its experience in military vehicles by developing Turkey's first 4x4 light-armored tactical wheeled vehicles, "Otokar Armored Personnel Carrier", "Akrep", and "Cobra" respectively. In 1997, Otokar moved to its new plant in Sakarya, Arifiye.

In 2002 Otokar acquired another Koç Group Company, Istanbul Fruehauf A.S., and strengthened its position in the sector by adding the trailer and semi-trailer production to its activities.

In late 2002, with the experience in public transportation Otokar developed the small bus called the "Navigo" which is marketed in Turkey with "Sultan" brand.

In 2003, Otokar initiated a cooperation with Singapore Technologies Kinetics (STK) for the new 8x8 tactical armored vehicle "Otokar-Yavuz".

By designing its “Armored Internal Security Vehicle” Otokar widened its armored product family in 2005.

In 2006, Otokar countinued to grow both in semi-trailers and public transport vehicles with new models.