In the 1964 version, the lightning with a ring was used in a yellow rectangle, with the Opel writing below. The whole logo was again delimited by a black rectangle. The basic form and proportions of the Blitz logo has remained unchanged since the 1970 version, which made the lightning tails shorter so that the logo could fit proportionately within a yellow square, meaning it could be displayed next to the 'blue square' General Motors logo. In the mid 1970s, the Vauxhall "Griffin" logo was, in turn, resized and displayed within a corresponding red square, so that all three logos could be displayed together, thus signifying the unified GM Europe.
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.
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.
However, Opel Team Joest was in for a tough fight. Not only had Alfa Romeo not been sitting on their hands, Mercedes-Benz had finally found the time to build a proper Class 1 car. Although the C180 V6 DTM lacked four wheel drive and only produced 400 horsepower, it featured a 6-speed sequential transmission, F1-derived active suspension, an innovative active ballast system which counteracted the pitching and diving of the nose under acceleration and braking and an all-carbon bodyshell bringing weight down to 980 kg (2161 lbs).

The 1.0 L and 1.2 L Ecotec Family 0 engines are carry overs from the Corsa B; the 1.4 L Family 1 engine was replaced with a new 1.4 L Family 0 model. The 1.8 L Family 1 engine is an upgrade for the previous 1.6 L 16 valve engine and produces 125 PS (92 kW) and 165 N⋅m (122 lb⋅ft) of torque. The edition with the 1.8 L engine was named Corsa GSi and was the predecessor of the new Corsa OPC.
Other special jobs were undertaken at the Rüsselsheim factory. One that was too exotic to be typical was the construction of an intercooler for the supercharger of the famous Junkers Jumo aircraft engine. Special methods had to be developed to fabricate this vital assembly from very thin sheets of aluminium. With work like this going on, Germany's enemies naturally took note of the various Opel plants, and starting in August 1944, began attacking them by air. Destruction was heavy at both Rüsselsheim and Brandenburg from the attacks by Allied bombers. Never was the outlook bleaker at Adam Opel AG than in the first months of 1945.
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.
In marketing terms the "Kadett KJ38" was intended to fill the niche that Opel had recently vacated with the departure of the Opel P4, but the KJ38, priced at 1,800 Marks, was more expensive than the P4 and its reduced specification left it with the image of a car for poor people (..Image des Arme-Leute-Autos..) at a time when economic growth in Germany was finally fostering a less minimalist approach to car buying.[4] The "Kadett K38 Spezial" fared better in the market place: in 1938 and again in 1939 it was Germany's top selling small car. By May 1941 the company had produced 17,871 "Kadett KJ38"s and 56,335 "Kadett K38 Spezial"s.[4]
Historically, Opel vehicles have also been sold at various times in the North American market as either heavily modified, or "badge-engineered" models under the Chevrolet, Buick, Pontiac, Saturn, and Cadillac brands - for instance the J-body platform, which was largely developed by Opel - was the basis of North American models such as the Chevrolet Cavalier and Cadillac Cimarron. Below is a list of current or recent Opel models which are sold under GM's North American brands.

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 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.

The saloon and estate car versions were produced in China by Shanghai GM as Buick Sail and Buick Sail S-RV, respectively from June 2001 to February 2005. That year, they received a facelift and became known as the Chevrolet Sail and SRV. In September 2006, Chile became the first country outside China to receive the Chinese assembled Sail; it is called the Chevrolet Corsa Plus there, available as a four door saloon with a 1.6 L 92 PS (68 kW) engine. The Corsa Plus includes dual front airbags, anti lock brakes, air conditioning, electric windows and central locking as standard equipment.
At the first round of the season held at the former Grand Prix track of Zolder in Belgium, Opel Team Joest’s misfortunes continued. Manuel Reuter retired in the early stages, with both John Winter (16th) and Keke Rosberg finishing a lap down on winner Alessandro Nannini (ITA) in the Alfa. Race 2 was more positive however, with only John Winter dropping early on. Reuter lead the Opel charge in 7th, with Rosberg in 10th.
*Fuel economy values are determined through CO2 measurement in accordance with the latest ECE R101/SANS 20101 standards, as prescribed by South African government, conducted in a controlled environment and were correct at the time this disclaimer was published, which is subject to change. The specifications are for comparison purposes between the different vehicle models available in the S.A market which are all tested in the same manner, specific driving cycles and controlled environment.
Launched in 1962, GM Europe's small car for the 1960s, the Opel Kadett, looked like a shrunk Chevy Nova, and hid a 1.0-liter water-cooled overhead-valve four-cylinder up its nose. While this motor had pre-War origins, it was a good one. It weighed just 211 lbs, revved beyond 6000 rpm, and made 54 horsepower in the high-compression 'S' version, as long as you used premium fuel.
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