The Volkswagen Type 3 is a compact car manufactured and marketed by Volkswagen from 1961 to 1973. Introduced at the 1961 Frankfurt Motor Show, Internationale Automobil-Ausstellung (IAA), the Type 3 was marketed as the Volkswagen 1500 and later as the Volkswagen 1600, in three body styles: two-door Notchback, Fastback, and Station Wagon, the latter marketed as the 'Squareback' in the United States. The Type 3 diversified Volkswagen's product range beyond the existing models—the Type 1 Beetles, Type 14 Karmann Ghia, Type 2 vans and pickups—while retaining Volkswagen's hallmark engineering features: the air-cooled rear-engine, rear-wheel drive train, body-on-chassis construction with a backbone chassis integrated into the car's floorpan), as well as torsion bar front and rear suspension. Despite using the Beetle's wheelbase, the Type 3 was conceived as a larger car, offering a larger engine and increased cargo and passenger volume—the latter from its increased length and width as well as from its slab-sided, Ponton styling, maximizing the platform's footprint. Background The Type 3 emulated major features of the Type 1 Beetle, using a low-profile version of Volkswagen's rear-engined, 4-cylinder air-cooled engine, as well as body-on-chassis construction (the body bolts to a frame that includes the floor pan), retaining the same wheelbase – but using more contemporary and slab-sided Ponton styling, in contrast to the Type 1's articulated fenders and running boards. VW finalized the design by 1959 with prototypes ready for testing by 1960. Secrecy was such that even at the 1960 Geneva Auto Show, VW denied they were readying a new design. In 1961 VW announced the new line as the "VW 1500". Production began in August 1961, a month before launch, of the Volkswagen 1500 Notchback, encompassing three-box styling in a notchback saloon body. Production of the Karmann Ghia 1500 (also known as the Type 34 Karmann Ghia) with a coupé body commenced in November 1961 and deliveries started in January 1962. The station wagon/estate-bodied Variant (marketed as the Squareback in the US) followed, with the first cars produced in February 1962. Two convertibles based on the 1500 Notchback were also announced with the original models, but did not enter production. The Fastback, or TL version, a fastback coupé, arrived in August 1965, along with the 1600 engine. Volkswagen's intention was that this model should replace the Notchback, which is what happened in the UK market. However, in other markets, including the German domestic market, the number of