The Volkswagen Hanover factory celebrates its 25th anniversary on 8th March: more than 5 million commercial vehicles have left the assembly line since the factory was opened. The water-cooled boxer engine and the modified diesel engine of the Golf created the urgently needed improvements to the Transporter. At that time, the decision-makers at Hanover were probably not even aware that the diesel unit would open up a completely new chapter in this success story. First of all, however, the somewhat weak-chested units at the heart of the new Transporter were pepped up in brisk succession: in 1982 came two new water-cooled engines and a 5-speed gearbox (option); in 1983 a 66 kW injection engine with catalyst and power assisted steering (offered in range); in 1985 the all-wheel drive "syncro" (the parts for which were produced in Hanover for final assembly at Steyr Daimler Puch, a cooperation partner in Graz), also a new, even more powerful engine (82 kW), and the turbo-diesel. Volkswagen Caminhoes Ltda. begins producing medium-weight trucks with a gross vehicle weight of 11-13 tonnes in Brazil. Production of the Volkswagen diesel Transporter commences at the Hanover Factory. Following the illness of Toni Schmücker, the Supervisory Board decides who is to succeed him as Chairman of the Board of Management and appoints Dr. Carl H. Hahn on 13th November. On 14th December, the first Volkswagen Transporter built at Volkswagen Argentina S.A., Buenos Aires, leaves the assembly line.