1938 saw the presentation of the highly successful Kapitän. With a 2.5 L six-cylinder engine, all-steel body, front independent suspension, hydraulic shock absorbers, hot-water heating (with electric blower), and central speedometer. 25,374 Kapitäns left the factory before the intensification of World War II brought automotive manufacturing to a temporary stop in the Autumn of 1940, by order of the government.

Opel was marketed in Malaysia beginning from the 1970s, and early models exported were Kadett, Gemini, and Manta. Opel had moderate sales from the 1980s until the early 2000s, when Malaysian car buyers favoured Japanese and Korean brand cars such as Toyota, Honda, Hyundai (Inokom) and Kia (Naza), which offered more competitive prices. Sales of Opel cars in Malaysia were dropped then, as Opel's prices were slightly higher than the same-segment Japanese, Korean, and local Proton and Perodua cars, and they were hard to maintain, had bad aftersales services, and spare parts were not readily available.
Instead, it had the same front fascia as the Latin American Chevrolet Corsa, possibly because GM South Africa wanted the same front fascia as the sedan and pickup, as swapping with the European front fascia would have been expensive sawing and welding due to the Latin American Corsa's sharper headlights. This car was 2001 Semperit Irish Car of the Year in Ireland.
The Kadett B wis sauld in the Unitit States throu Buick dealers frae 1967 till 1972 simply as the Opel. U.S. models wur later grantit the front end an trim o the new Opel Olympia, introduced in 1966 as an upmarket version o the Kadett. The caur teuk pairt in the Trans-Am Series durin its commercial life. Kadett A an B wur technically semple caurs whose task wis tae compete wi the mercat leader, the Volkswagen Beetle.

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.
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