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A Kammback—also known as a Kamm tail or K-tail—is an automotive styling feature wherein the rear of the car slopes downwards before being abruptly cut off with a vertical or near-vertical surface. A Kammback reduces aerodynamic drag, thus improving efficiency and reducing fuel consumption, [1] while maintaining a practical shape for a vehicle.
The Kammback "cut-off tail" design continues to be popular. It often insinuates streamlining when used in production cars and is a design technique to make the vehicle look "sporty". [ 14 ] [ 15 ] [ 16 ] Kamm's design approach is found on popular mass-market vehicles, supercars , alternative fuel vehicles , as well as for race cars .
In 1981, the two-door subcompact-sized AMC Spirit-based models, the SX/4 and Kammback, joined the Eagle line aimed at both first-time buyers and fleet sales. [ 3 ] A Sundancer convertible conversion for the larger Eagle two-door model was available during 1981 and 1982.
The kammback is not a fastback design with a roofline that tapers downward toward the car's rear before being cut off abruptly. [5] Some models, such as the Ford Mustang, have been marketed explicitly as fastbacks, often to differentiate them from other body styles (e.g. coupé models) in the same model range.
Instead, AMC offered a restyled Gremlin either as a "Spirit Kammback" or "sedan", while an additional model with a more gently sloping rear was introduced as the "Spirit Liftback" or "coupe". Due to budget constraints, the Spirit shared the Gremlin's platform – its floorpan, powertrains, and many other parts were carried over.
The Chevrolet Vega is a subcompact automobile that was manufactured and marketed by GM's Chevrolet division from 1970 to 1977. Available in two-door hatchback, notchback, wagon, and sedan delivery body styles, all models were powered by an inline four-cylinder engine designed specifically for the Vega, with a lightweight, aluminum alloy cylinder block.
The Volkswagen Type 3 is a compact car manufactured and marketed by Volkswagen from 1961 to 1973. Introduced at the 1961 Frankfurt International Motor Show, the IAA, the Type 3 was marketed as the Volkswagen 1500 and later as the Volkswagen 1600, in two-door notchback, fastback, and station wagon body styles, the latter marketed as the 'Squareback' in the United States.
A kammback is a truncated boattail. It is created as an extension of the rear of the vehicle, moving the rear backward at a slight angle toward the bumper of the car. This can reduce drag as well but a boattail would reduce the vehicle's drag more.