A rare "Sport" model was produced in 1985 to homologate for the sub 1,300 cc class of Group A for the British Rally Championship.[citation needed] These sport models were white and came with unique vinyl decals, a 13SB engine with twin Weber 40 DCOE carburettors, an optional bespoke camshaft, a replacement rear silencer, and few luxuries. This gave 93 hp and a top speed of 112 mph (180 km/h) with a 0–60 mph time of 8.9 seconds. These are by far the rarest models (500 produced) and thus acquire a high market price if one does become available.

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.
^ Heinz Michaels (24 August 1962). "Opel bläst zum Angriff auf VW: Mit tausend "Kadetten" pro Tag – Ein neues Firmen jahrhundert, eine neue Fabrik, ein neuer Wagen: ....In der letzten Hauptversammlung hatte der Vorstand alle Versuche, die hausväterisch wieder angesammelten Reserven anzugreifen, gerade deshalb entschlossen abgewiesen. Mahnend sagte Prof. Nordhoff damals: "Hinter beiden Unternehmen (General Motors und Ford) steht eine Finanzkraft, der kein deutsches Unternehmen etwas auch nur annähernd Gleichwertiges entgegenzusetzen hat, und der Wille des Eindringens in den deutschen Markt um jeden Preis scheint vorhanden zu sein.""". ZEIT ONLINE. Retrieved 2013-05-12.
Rüsselsheim.  The eagerly-awaited new Opel Corsa GSi has arrived! After the Insignia, the Corsa is the second GSi model now on offer. The newcomer impresses with its ultra-precise OPC chassis – for exemplary handling and short braking distances. The Corsa GSi is powered by Opel’s lively 1.4-liter turbo with 110 kW/150 hp and 220 Nm of torque (fuel consumption[1] l/100 km: 8.0-7.7 urban, 5.5-5.1 extra-urban, 6.4-6.0 combined, CO2 g/km 147-138 combined). The four-cylinder power unit features a special GSi-calibration for increased responsiveness. Mated to a short-ratio, six-speed gearbox, the engine delivers outstanding punch in second and third gears, as well as a maximum torque plateau from 3,000 to 4,500 rpm.
*** Autovehicule retrase din fabricație / autovehicule comerciale ușoare: Toate valorile menționate se referă la modelul de bază UE cu dotări standard. Datele privind consumul de carburant și emisiile de CO2 sunt determinate conform regulamentelor R (CE) nr. 715/2007 și R (CE) nr. 692/2008 (în versiunile aflate în vigoare), luând în considerare masa autovehiculului în stare de funcționare, așa cum este specificat în regulamente. Prezența unor echipamente suplimentare și a dotărilor opționale din fabrică poate avea ca efect obținerea unor valori mai ridicate decât cifrele menționate pentru consum și emisii de CO2. Valorile privind consumul de carburant și emisiile de CO2 nu se referă la un autovehicul anume și nu fac parte dintr-o ofertă. Acestea sunt furnizate exclusiv pentru comparația între diferite variante de autovehicule, dar pot fi diferite față de consumul real realizat în condiții reale de conducere, influențat în mare măsură de stilul de conducere și condițiile de utilizare. Echipamentele suplimentare pot crește greutatea autovehiculului atunci când acesta este gol și, în unele cazuri, sarcina admisă pe punți, precum și masa totală admisă a autovehiculului și pot reduce masele admise de remorcare. Acest lucru ar putea duce la reducerea vitezei maxime și la creșterea timpului de accelerare. Valorile performanțelor de conducere iau în considerare un șofer cu greutatea de 75 kg și o încărcătură de 125 kg. 2 gaz H în m3/100 km.
You may remember the beloved Opel Kadett A named “Oliver” that Richard Hammond of Top Gear fame slogged through the Makgadikgadi Salt Pan of Botswana. He became so attached to the little car that he had it restored and owns it to this day. Hammond’s love of this classic comes with good cause as it was a secret weapon of Opel developed specifically to invade the dominance of Volkswagen during the 1960s. Even though it delivered similar levels of horsepower (around 40 hp) it did offer better heating as well as more interior and luggage space. The Kadett’s popularity and engine reliability provided a resurgence for Opel and the car was exported to many countries including the United States. Whether you punish yours in the muck and mud or reserve your driving strictly to the road is entirely up to you.
The Corsa A was known in the United Kingdom market as the Vauxhall Nova (as it was considered that Corsa sounded too much like "coarser"), where it was launched in April 1983, following a seven month long union dispute due to British workers being angry about the car not being built there[6] whilst British built cars were subject to huge import tariffs in Spain prior to its entry into the European Community.[citation needed]
In March 2017, Groupe PSA agreed to buy Opel, its British sister brand Vauxhall and their European auto lending business from General Motors for US$2.2 billion.[32][33] In return, General Motors will pay PSA US$3.2 billion for future European pension obligations and keep managing US$9.8 billion worth of plans for existing retirees. Furthermore, GM is responsible for paying about US$400 million annually for 15 years to fund the existing Great Britain and Germany pension plans.[32] 
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