In 1957 Opel Product Director Karl Stief was mandated by General Motors headquarters in Detroit to develop "the perfect Anti-Volkswagen" ("einen perfekten Anti-VW"). The development team was headed up by Stief, supported by Hans Mersheimer (car-body) and Werner K. Strobel (engine and running gear), under conditions of such secrecy that even now very little is known of the development history of the 1962 Kadett. It has been alleged that GM was trying to conceal a new technique of platform and design sharing between Opel and its British sister company Vauxhall, which released the strikingly similar Viva HA in 1963, a year after Opel introduced the Kadett. Over the subsequent two decades Opel and Vauxhall's ranges would rapidly converge as Vauxhall's design independence from Opel was eroded to the point where by 1985, Vauxhall's car range entirely consisted of rebadged Opel models.
The instrument panel and center stack are clearly structured and horizontally aligned to the driver. The cluster and air vents feature subtle chrome finishes, conveying a message of high quality, while the available 8-inch color touchscreen is seamless integrated into the centerstack and features modern IntelliLink infotainment system, including Apple CarPlay and Android Auto compatibility.
The Opel Eye front camera processes diverse data, thus forming the basis for the driver assistance systems such as Speed Sign Recognition and Lane Departure Warning. If the system registers that the lane is being left unintentionally it warns the driver by emitting audible and visible signals. Cruise control with speed limiter also makes driving more pleasant. Forward collision alert with pedestrian detection and Automatic Emergency Braking helps avoid accidents, and it is combined with a special Driver Drowsiness Alert.
The Insignia flagship followed exactly the same initiative as the Astra. Once again the Opel engineers’ main objective was efficiency. Thanks to optimized packaging and lightweight materials they could save up to 175kg on the Insignia Grand Sport compared with its predecessor – much to the benefit of dynamics and fuel consumption. Depending on powertrain and equipment, the current Insignia Sports Tourer even weighs up to 200kg less than the similar model variant from the first generation. 

Funny enough, the Calibra almost made it to the shores through Saab dealers. The timing was fortuitous, the Calibra went on sale in 1990 or right around the time GM stuck its claws into Saab. Based on the also-not-for-us Vectra, the Calibra was a slick coupe that was touted as the most aerodynamic car in the world … in 1990. A drag coefficient of 0.26 is still damn good today.
^ General Motors Austria Gesellschaft m.b.H. (GMA, founded 1963 as sales organisation; from 1979: Administration, Non-productive Departments an Sales) and General Motors Austria Werke Gesellschaft m.b.H. (GMAW founded 1979; Production). In November 1987 GMAW (Austrian Handelsregister, HRB 24.436) were merged into GMA (HRB 20.133b, actual Firmenbuch FN 110500a).
The Kadett C appeared in August 1973[12] and was Opel's version of the General Motors' "T-Car". It was the last small Opel to feature rear-wheel drive, and remained in production at Opel's Bochum plant until July 1979, by which time Opel had produced 1,701,076. Of these, 52% had been exported outside West Germany,[13] most of them to markets in other parts of western Europe.
By 1970, the Kadett’s brief stay in the US import car rank number two was over, having been muscled aside by Toyota’s hot new redesigned Corolla (CC here). The Corolla was very much a car in the Kadett’s formula: traditional rwd and conventional in every respect. But the combination of a high D-Mark, and Toyota’s hot momentum changed the tide forever. In the US, the Corolla would soon enough depose VW out of the top slot. In Germany, the Beetles rapid crash and the Kadett’s success forced VW’s hand with the very advanced Golf, recouping the gold. The Kadett/Astra were the perennial number two in germany, but some years ago, it dropped further down the the top seller list, as smaller cars, including Opel’s Corsa have become more popular. But the Golf still sits on the throne.
As a German living in Germany, I join in the question “Where did they all go?”. Even in Germany you won`t find many Opel Kadetts “A-D”, the D-Kadett was built until 1984, being regularly driven anymore. Even at classic car shows that my wife and me attend with our cars you are sure to see at least about 30 vintage Porsche 911 or Mercedes SL for every Opel Kadett oder rear-wheel-drive (built until 1980) Ford Escort.
In 1994 a 167 hp 2.5 L V6 was introduced, thus creating what many considered to be the finest Calibra to date. Available with both manual and automatic transmissions, the V6 wasn’t as fast as the Turbo, but was rather more civilised, and proved to be more reliable than the complex four-wheel drive model with its notorious transfer box issues. 1995 saw the introduction of the the X20XEV Ecotec engine, a cheaper, less reliable derivative of the classic X20XE 16-valve or "red top" engine. This marked a reduction in power from 156 bhp to 136 bhp for the 16-valve version, although the Turbo continued with the C20LET.
The GSi's engine mapping had been carried out by Opel tuning specialists Irmscher. A model with the 82 PS (60 kW) 1.4 L multi point fuel injected engine, which was otherwise mechanically identical to the GSi, also became available as the Nova SRi in the United Kingdom. In January 1988, a turbocharged version of the Isuzu diesel engine was introduced, with power increased to 67 PS (49 kW).[8]
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