 The Vanden Plas models were rebranded as the 1.5 and the 1.7, the 1.5 having a twin carburettor 1500 cc engine and a manual gearbox, while the 1.7 had a single carburettor 1750cc engine and an automatic gearbox.Some models of Allegro 3 (the early HL and later HLS models) were equipped with four round headlights, rather than the more usual two rectangular ones.Allegro production, which had lasted for nearly a decade, finally finished in March 1982.