One resource that did not appear on the books of General Motors or on the rolls of the occupying authorities was most responsible for the recovery of Opel in 1945, the collaborative nature of its workers. They were not itinerant hires who had looked on their work at Rüsselsheim as just another job. They were men and women who had, for the most part, come from that immediate area, many from the country, and had literally grown up with the Adam Opel AG. The fate of Opel was important to its workers, for its collapse would mean the loss of the most important employer for the people of Rüsselsheim, who were finding their way home from the chaos of war.
The Corsa C was introduced with a 1.7 L DTI Ecotec turbodiesel engine supplied by Isuzu (Circle L) with 75 hp (55 kW). This was later joined by the 1.7 L DI Ecotec turbodiesel engine also supplied by Isuzu. The 1.7 L DI Ecotec did not include an intercooler and this reduced power to 65 PS (48 kW). From 2003, a new 1.3 L CDTI Ecotec turbodiesel engine was supplied by Fiat (MultiJet) which produced 70 PS (51 kW) and a 1.7 L CDTI Ecotec turbodiesel was supplied by Isuzu which produced 100 PS (74 kW). This new 1.7 L CDTI Ecotec featured a variable geometry turbocharger.
From 1986 to 2003, Opel models were produced by Delta Motor Corporation, a company created through a management buyout following of GM's divestment from apartheid South Africa. Delta assembled the Opel Kadett, with the sedan version called the Opel Monza. This was replaced by the Opel Astra, although the Kadett name was retained for the hatchback and considered a separate model. A version of the Rekord Series E remained in production after the model had been replaced by the Omega in Europe, as was a Commodore model unique to South Africa, combining the bodyshell of the Rekord with the front end of the revised Senator. The Opel Corsa was introduced in 1996, with kits of the Brazilian-designed sedan and pick-up (known in South African English as a bakkie) being locally assembled.
On the British motoring show Top Gear, Richard Hammond drove a 1963 Kadett A through the middle of Botswana and across the Makgadikgadi Salt Pan. He loved the car so much that he named it Oliver and later had the car shipped to the United Kingdom and restored, and it remains in his possession. It appeared on Richard Hammond's Blast Lab with the personalised number plate 'OL1 V3R'. It also appeared in the Top Gear lorry challenge as one of the used obstacles.
While the Ipanema clearly succeeded the Marajó, production of the Chevette (by now in sedan form only, the hatchback having been discontinued after the 1987 model year) and of the Kadett noticeably overlapped; the newer model was placed above the old one in Chevrolet's lineup. While Chevrolet entertained the possibility of a pick-up version of the Kadett E, it never materialized.