The Manta was even sold as the "1900 sport coupé" in 19, rather than as the "Manta". The frame, mechanics, dash, front seats, and many other parts were shared between the cars.
The only differences between the Ascona and Manta were exterior sheet metal, glass and trim. The Ascona A was the saloon version on the Manta A chassis and was sold in the US under the "1900" name as a two-door and four-door saloon, and as a two-door "sport wagon". Opels were imported by GM and sold through Buick dealerships and not their own dealership network, so they were limited in what makes and models they could sell there. The Manta A was one of only a few Opel models sold in the US. The sales approach for the Opel line in the US market differed from Europe. The most notable special editions models based on the GT/E were the "Black Magic" (with black and plaid interior) and the "Swinger" edition in white, also with an odd interior choice. The GT/E was a fuel-injected version of the European 1.9 L and the performance figures were very impressive for the time. The one exception was the 1975 Opel, which offered the GT/E and a number of special editions based on the GT/E. Most were basic trim packages, the most popular being the "Berlinetta", which was similar to the Luxus but included rubber trim on the bumpers (standard on all 1973 US Opel Mantas), vinyl roof, and other miscellaneous features. The European market had a number of different versions. The Manta was known to be one of the best-handling cars in its class and went on to win a large number of rallies in Europe and the United States.
MANTA CAR MODELS MANUAL
The Manta came with either a four-speed manual or a three-speed TH-180 automatic. In the United States, only the largest, 1.9-litre, engine was offered. The Manta was normally equipped with a 1.6 or a 1.9-litre CIH engine, although in continental Europe, a small, 1.2-litre, motor was also offered. (In the UK the Ford Capri niche was contested, with only limited success, by Vauxhall's Firenza, based on the ageing Vauxhall Viva until 1975.) The Vauxhall and Opel models were subsequently sold side by side. In the UK market, the first Manta was sold only as an Opel: there was no Vauxhall-branded Manta (or Ascona) until after the launch, in 1975, of the Manta B1 and Ascona B as the Mark 1 Cavalier coupe and sports hatch (Manta) and saloon (Ascona). It took its name, and a few minor styling cues, from the Manta Ray concept car (1961), which also famously influenced the 1968 Chevrolet Corvette C3 (both Chevrolet and Opel had General Motors as their parent company). A competitor to the Ford Capri, it was a two-door "three-box" coupé, and featured distinctive round tail lights, quite similar to those on the Opel GT and which in fact were used on the GT in 1973, its final model year. The Manta A was released in September 1970, two months ahead of the then new Opel Ascona on which it was based.