In any competitive environment it helps to have a properly defined target. The cutthroat compact executive segment is owned the world over by the German triumvirate of 3 Series, C-Class and A4. Of the trio though, it is the BMW that newcomers most want to beat. Not only must challengers do the basics well, they also need to bring something original and exciting to the party or risk being easily dismissed as a sideshow. In this newly added 2.0-litre turbo petrol Sport guise, the Q50 has plenty going for it. For starters it’s not a chore to look at.