The Calibra was introduced to counter the Japanese sports coupés, of the end of the 1980s and beginning of the 1990s. It employs the running gear of the first generation Opel Vectra, which had been launched in October 1988. Calibra production was based in the Opel factory in Rüsselsheim, Germany, and the Valmet Automotive factory in Uusikaupunki, Finland,[3] where production was consolidated in November 1995.[4]

Includit in the range frae 1976[4] wis vera rare version, the Aero-Kadett, an open-top Kadett wi targa roll bar, detachable ruif insert an a separate convertible tap aft o the roll bar (lik the contemporary Lancia Beta Speeder). This caur wis biggit in very leemitit nummers bi Karosserie Baur in Stuttgart. Ane clue concernin its rarity is the manufacturer's recommendit retail price o DM 15,500 at a time when Volkswagen's trustit (if slower an hivier) 1303 Cabriolet wis affered for DM 12,735.[4]

Airc., Fjernb. C.Lås, Parkeringssensor I Bag, Fartpilot, Kørecomputer, Infocenter, Startspærre, Udv. Temp. Måler, Sædevarme, Varme I Rat, Højdejust. Forsæde, El-Ruder, El-Spejle M/Varme, Automatisk Start/Stop, Cd/Radio, Multifunktionsrat, Håndfrit Til Mobil, Bluetooth, Isofix, Bagagerumsdækken, Kopholder, Stofindtræk, Splitbagsæde, Læderrat, 6 Airbags, Abs, Antispin, Esp, Servo, Ikke Ryger, Service Ok, Tidligere Undervognsbehandlet

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]
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]