The reason was that the Volkswagen Scirocco is actually a fifth generation Honda Civic EG model from the early to mid-1990s fitted with wider arches.
The VW Scirocco is supposed to be a three door coupe. In reality it is as low as the Honda Civic mentioned above. It may be wider than the Civic but if you look carefully, it does have the same side silhouette as the Civic. Take a proper look at both car's C pillars. Imagine the EG Civic with a wide arched bodykit (and slightly smaller rear windows) with different badging and you get a VW Scirocco. This is especially even clearer if you were slightly drunk or on medication.
It should have had a more sloping rear hatch instead of still thinking of being practical and all that. Since VW already has the Golf for practicality I still wonder why VW didn't go the whole hog and make a proper coupe.
What VW actually came up with is a recycled Honda Civic EG series with a wider rear end. Imagine what would VW do in about fifteen years or so, a copy of the final Euro Civic type R hatchback with wider rear arches?