The Alfa Romeo Zeta 6 was a coupe concept built by Zagato Industrial Design on commission from Alfa Romeo, using the Alfa Romeo GTV 6 2.5 as its technical basis. It was conceived as an alternative to the GTV's own coupe body, with early design work on what was called the AZ-6 concept dating back to 1979.
Where the standard GTV coupe had a fairly angular fastback shape, the Zeta 6 was styled with softer, rounded lines that still carried Zagato's characteristic design language. The grille and headlights were integrated into a flat, shock-absorbing front end, the wheel arches were given a pronounced, flowing bulge, and a trapezoidal door window with rounded corners led into a panoramic rear window. Like the GTV, it was laid out as a 2+2, though its rear seats appear to have offered less space than those of the production car. Its overall appearance was harmonious rather than aggressively modern.
An improved version, reportedly already the third iteration and refined mainly in its interior, was shown at the Turin motor show in November 1984, where a small-series production run by Zagato from 1985 was suggested as a possibility. That production never materialized, despite the prototype also being displayed at the New York Motor Show and receiving a generally favorable reception. Speaking at the 1991 Geneva show, Gianni Zagato, who ran the Zagato group together with his brother Elio, said that all Zagato designs had been developed with series production in mind, though only the most commercially viable projects were ultimately put into production, leaving others to be regarded afterward as concept cars.
