The Opel Monza is a grand touring coupe produced by the German automaker Opel between 1978 and 1986. Known for its sleek design and spacious interior, the Monza combined sporty aesthetics with comfort, marking it as a distinguished model in Opel's lineup. Throughout its production, the Monza saw several updates in dimensions and performance, reflecting the evolving automotive trends of its era. This overview covers all generations of the Opel Monza, examining their sizes and specifications to provide comprehensive insight into this classic model.