In the early 1920s, Opel became the first German car manufacturer to incorporate a mass-production assembly line in the building of their automobiles. In 1924, they used their assembly line to produce a new open two-seater called the Laubfrosch (Tree frog). The Laubfrosch was finished exclusively in green lacquer. The car sold for an expensive 3,900 marks (expensive considering the less expensive manufacturing process), but by the 1930s, this type of vehicle would cost a mere 1,930 marks – due in part to the assembly line, but also due to the skyrocketing demand for cars. Adam Opel led the way for motorised transportation to become not just a means for the rich, but also a reliable way for people of all classes to travel.
In the US, some 500 Buick dealers started carrying the Kadett in 1964, after their previous sole product, the larger Rekord, was knocked out of the ring by GM’s own 1960/1961 compacts. I strongly suspect the Buick dealers (and their ad agency) who hadn’t yet taken down their Opel signs were not really very committed or motivated, and all of 17k ’64s and 14k ’65 Kadett A were sold. Meanwhile, VW was moving some 400k Beetles in America.
The Kadett D wis introduced in November 1979, goin on sale in the UK some five months afore the Breetish version, the Vauxhall Astra Mark 1, wis launcht in Aprile 1980. Aw models wur designed as three- or five-door hatchbacks an estates or station wagons. Thare wur an aa twa- an fower-door sedans, which uised the same bodyshells as the hatchbacks, but thir wur suin dropped. An aa dropt, in comparison tae the C Modell wis the Coupé.
The Calibra was a hit, with customers lamenting the demise of the Opel Manta and the Ford Capri lining up eagerly. The Opel had competition, no doubt, with the BMW 3-Series coupe outselling it across Europe, but it was still a strong seller and its sleek looks sitting the in showroom did much to lift the image of its humbler stablemates. Ford's rival, the American-build Probe, was unable to match its success, which must have annoyed Ford as the Capri usually gave the Manta a bloody nose in the sales stakes. So confident were GM that the Calibra started to find fans outside of Europe. Holden sold its own version in Australia and New Zealand, albeit fully imported and identical to the European car, while South American markets got a Chevrolet-badged version. Rumoured US sales never happened though.
The base car was available only as a two-door "Limousine" (sedan/saloon). Customers looking for a soft-top "Cabrio-limousine" would need to specify a "Kadett Spezial". For the first time Kadett buyers, provided they were prepared to choose a "Kadett Spezial" could also specify a four-door "Limousine" (sedan/saloon) bodied car, priced at 2,350 Marks as against 2,150 Marks for a "Spezial Cabrio-Limousine" and 2,100 Marks for a two-door "Spezial Limousine".
Changes in the Opel cars under GM's management did not appear until January 1950, when a face-lifted Olympia was introduced. Front and rear fenders were elongated and a heavy horizontal chrome grille was added. A retrograde step was the replacement of the four-speed gearbox with a three-speed unit, with a column shift lever. Engine tuning emphasised high torque at low engine speeds so the extra ratio was not too sorely missed. The cabrio-coach model was returned to the Olympia range and a kombi was also offered, built by Karosserie Miesen. In February 1951, in preparation for the first postwar automobile show in Germany, the Olympia was dressed up further with a trunk compartment that enclosed the spare tire and 15-inch (38 cm) wheels instead of 16-inch (41 cm) wheels and tires. With minor further changes, this model lasted to March 1953.
Later, an 1800 cc version wis introduced for the Kadett/Astra GTE model. This range o ingines wis an aa uised for later models o the Corsa/Nova, an the mid-sized Cavalier/Ascona. The Kadett D wis an' a' equipped wi a 1600 cc diesel ingine that wis possible tae drive as cheap as 5.0 L/100 km, an a cairy-ower 1196cc OHV ingine. It wis an aa produced as IDA Kadett in Kikinda, Yugoslavie.