The Alfetta saloon was the base for the Alfetta GT, a 2-door, four seat fastback coupé designed by Giorgetto Giugiaro at Italdesign. Introduced in 1974, similarly to the saloon it was initially available only with the 1.8-litre (1,779 cc) version of the Alfa DOHC four. For 1976, with the final phasing out of the earlier 105 Series (GT 1300 Junior and GT 1600 Junior and 2000 GTV), the Alfetta GT became a range; the 1.8 was discontinued in favour of the 1.6-litre (1,570 cc) Alfetta GT 1.6 and 2.0-litre (1,962 cc) Alfetta GTV 2.0. At the same time some updates were introduced, such as a new front grille with horizontal slats and two series of vents beneath it. The GTV was distinguished from the 1.6 version by twin chrome whiskers in the grille and GTV scripts carved in the ventilation vents on the C-pillar.
In 1979, some minor revisions, including a revised engine with new camshaft profiles and a change to mechanical-and-vacuum ignition advance, saw the 2.0-litre re-designated the Alfetta GTV 2000L. The car also received a modified suspension layout and was the first Italian petrol production car with a turbocharger.