From the late 1930s to the 1980s, terms from the German Navy (Kapitän, Admiral, Kadett) and from other official sectors (Diplomat, Senator) were often used as model names. Since the late 1980s, the model names of Opel passenger cars end with an a. As Opels were no longer being sold in Great Britain, no need remained to have separate model names for essentially identical Vauxhall and Opel cars (although some exceptions were made to suit the British market). The last series to be renamed across the two companies was the Opel Kadett, being the only Opel to take the name of its Vauxhall counterpart, as Opel Astra. Although only two generations of Astra were built prior to the 1991 model, the new car was referred to across Europe as the Astra F, referring to its Kadett lineage. Until 1993, the Opel Corsa was known as the Vauxhall Nova in Great Britain, as Vauxhall had initially felt that Corsa sounded too much like "coarse", and would not catch on.
Other events which would powerfully affect Opel's future were taking place in 1948. In February and March, a GM study group came to Germany to investigate every aspect of Europe's economic situation and Opel's special problems. On their return, they submitted a report on 26 March recommending that General Motors resume control of Opel. On 5 April, however, GM's financial policy committee concluded, "in view of the many uncertainties surrounding the operation of this property, the Corporation is not justified in resuming the responsibility for its operation at this time..." GM, it seemed, did not want Opel.
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.

Opel operates 10 vehicle, powertrain, and component plants and four development and test centres in six countries, and employs around 30,000 people in Europe. The brand sells vehicles in more than 60 markets worldwide. Other plants are in Eisenach and Kaiserslautern, Germany; Szentgotthárd, Hungary; Zaragoza, Spain; Gliwice, and Tychy, Poland; Aspern, Austria; Ellesmere Port, and Luton, Great Britain.[37] The Dudenhofen Test Center is located near the company's headquarters and is responsible for all technical testing and vehicle validations.

In 1982 Opel once again accomplished a great feat with a small car: the Corsa A joined the range below the Kadett, which by now was becoming a compact model. Designed by Chief Designer Erhard Schnell, who also penned the legendary Opel GT, the only 3.62m-long Corsa was notable for its prominent rally-car wheel arches and a drag coefficient of 0.36. Offered initially as a two-door hatchback and sedan, and a five-door as of 1985, the Corsa again demonstrated how masterfully Opel can generate space on a small platform. The 100hp GSi also combined frugality with fun. Originally conceived as an entry-level model for those on a tight budget, the Corsa A had become a bestseller by 1993 with a total of 3.1 million units sold.

The Crossland X perfectly fits to your lifestyle, offering exceptional versatility and the storage space of a SUV – for whatever your day brings. You're never short of space, as you can increase the Crossland X's space from 410 litres to 1,255 litres. Featuring split foldable and slideable rear seats, you can slide them to get up to 520 litres of boot space or fold them at a ratio of 40/60 and achieve 1,255 litres. Even longer objects can fit in with the foldable armrests 


As the war progressed, military authorities placed greater stress on the development of air-cooled engines, which they felt had more immunity to damage from weather, shellfire, and misuse. To meet this demand, Opel engineers developed an unusual variation on normal cooling for the 3.6 L truck engine. It was called "air-oil cooling", and used engine oil to take heat away from the jackets around the cylinder barrels. The heads were directly cooled by air, there being three separate aluminium finned heads, each serving two cylinders. Of this interesting engine, which developed 72 hp (54 kW; 73 PS) at 3,000 rpm on 74-octane fuel, only three examples were built.
EUR 29,000JPY 3,567,000BGN 56,718CZK 746,779DKK 216,604GBP 25,150HUF 9,402,670PLN 124,877RON 138,084SEK 312,591CHF 32,790ISK 3,996,200NOK 284,171HRK 214,928RUB 2,123,102TRY 196,423AUD 46,870BRL 129,755CAD 43,839CNY 224,031HKD 255,525IDR 469,774,480ILS 116,426INR 2,292,088KRW 38,662,800MXN 624,016MYR 135,772NZD 49,462PHP 1,708,042SGD 44,561THB 1,025,498ZAR 463,263
The extra-light, all-aluminium engines, together with optimization of the front and rear axles, also contribute to the low total weight. The particularly compact three-cylinder petrol engines weigh around 15kg less than the previous generation of similarly powerful four-cylinder units. Highly unusual in the small-car-sector is the new Corsa’s aluminium engine bonnet, which although longer, saves 2.4kg in comparison to the previous model’s bonnet made of steel. The Insignia flagship was previously the only model in the Opel range with an aluminium bonnet. The seats also have been put on a diet. The new optimized seat structure saves a total of 10kg – 5.5kg at the front, 4.5kg at the rear. New lighter insulating material was used for fine tuning. Altogether the measures result in a weight reduction that, in combination with optimum aerodynamics and the efficient powertrains, will lead to a considerable reduction in fuel consumption and CO2 emissions.
On 29 February 2012, Opel announced the creation of a major alliance with PSA Peugeot Citroen resulting in GM taking a 7% share of PSA, becoming PSA's second-largest shareholder after the Peugeot family. The alliance was intended to enable $2 billion per year of cost savings through platform sharing, common purchasing, and other economies of scale.[25] In December 2013, GM sold its 7% interest in PSA for £250 million, after plans of cost savings were not as successful.[26] Opel was said to be among Europe's most aggressive discounters in mass-market.[27] GM reported a 2016 loss of US$257 million from its European operations.[26] It is reported that GM has lost about US$20 billion in Europe since 1999.[28]
Elsewhere, Opel’s wild child comes with all of the safety and comfort features available in the regular KARL. City mode reduces steering effort at the push of a button, greatly facilitating maneuvering in heavy city traffic. Park Assist is also available and assists the driver during parking by giving an acoustic warning as the car approaches obstacles when reversing. Cruise control with speed limiter regulates driving speeds, which is extremely helpful in busy urban traffic and in residential areas.
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.
The Kadett D was introduced in the middle of August 1979, with deliveries on the home market beginning early in September 1979.[14] In November 1979, the car went on sale in the United Kingdom, some five months before the Vauxhall Astra Mark 1, the British version, was launched in April 1980. The cars were designed as three- or five-door hatchbacks and estates or station wagons. There were also two- and four-door sedans featuring separate boots/trunks, which shared the silhouettes of the hatchbacks: in the United Kingdom, the sedan versions were soon withdrawn, until the 1986 launch of the MKII-based Belmont. For the first time since 1965 there was no coupé-bodied Kadett in the range: the previous Kadett C coupé was indirectly replaced by the three-door 1.3 SR sports model. 
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