Vega appears to have been the first GM vehicle designed by committee – the corporate engineering staff – and imposed upon one of its divisions like a turd to be polished. Chevrolet engineering had in fact developed its own subcompact but when presented to corporate it was rejected “out of hand” by Ed Cole, who told them to develop Vega instead, then code-named “XP-887”.
On August 26, 1945, the State Defense Committee published Order № 9905, which prescribed the start of production of the 4-door Kadett on the Moscow small car plant "without any changes to the design". But implementation of the plan was far from smooth. The Rüsselsheim plant had been deeply involved in the Nazi war effort, producing aircraft engines for the Luftwaffe, and consequently has been heavily damaged by the Allied air raids. Very little was left to be salvaged – mostly incoherent drawings and plans, with several stamping dies for the 2-door version of the Kadett to add.
Includit in the range frae 1976 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.
The Kadett C appeared in August 1973 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, most of them to markets in other parts of western Europe.
The handling and ride are basically fine, but are all but invisible from the point of view of a keen driver. The Crossland is tidy through corners, with reasonable steering weight but no actual feedback, and the body tilts over only to a reasonable angle. The ride is a touch stiff in its damping, especially around town (which is disappointing, given that any Crossland will probably spend most of its life in town) but it does improve on the open road. Refinement is only average though with quite a bit of wind and road noise. There’s little point in having Opel’s phone-based OnStar concierge service fitted if you can’t hear what the operator is saying . . .
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.
A convertible version was also available, for the first time in 1987, built by Bertone of Torino/Italy, bringing it to line with competitors, such as the Ford Escort and Volkswagen Golf. For the 1988 model, capacities were raised from 1.3 to 1.4 litres. In the fall of 1986 a new 1,998 cc engine replaced the 1.8 hitherto used on the GSi and Vauxhall Astra GTE in many markets, although the 1.8 continued to be sold in some places. In 1988, a 16-valve twin-cam version was developed for a high-performance GSi/GTE model, yielding 156 PS (115 kW) in non-catalyzed form, six less horsepower with a catalytic converter fitted. While criticized for a lack of refinement, the GSi 16V was also lauded as the most powerful car available in its class at the time. Aside from the "16V" badging, it could be told from an eight-valve GSi by its twin rectangular exhaust pipes.
After the closure of Opel Australia, Holden imports newer Opel models such as the Astra GTC (ceased 1 May 2017), Astra VXR (Astra OPC), Cascada (ceased 1 May 2017), and Insignia VXR (Insignia OPC, ceased 1 May 2017), under the Holden badge. The 2018 5th-gen Holden Commodore ZB is a badge-engineered Opel Insignia, replacing the Australian-made, rear-wheel drive Commodore with the German-made front-wheel/all-wheel drive Insignia platform.