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Picture a BMW 3 Series in your head. Now tell me the number of doors it's got. I'm no psychic, but I'd bet my last sen with a considerable degree of confidence that your answer would be four.

And why wouldn't it, when the sedan has largely been the most prevalent bodystyle offered throughout the vehicle's history, and when it has so often been referred to as the benchmark sports 'sedan'?

It's easy to forget, therefore, that the BMW 3 Series only ever had two doors for the first 13 years of its life. The genesis that was the very pretty E21 of 1975 was conceived to spiritually succeed the legendary 2002 coupe, you see.

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It wasn't until six years into the successive E30 generation that the first 3 Series sedan appeared, and the rest is history. Still, the coupe remains the only bodystyle to be available on each and every 3 Series generation.

Not only, then, is the elegant two-door shape very much in the blood that courses through the definitive compact exec's veins – it is the very origin of the species. Yet, like it or not, the world has a short memory.

We hopped over to sunny Portugal recently to join the global press drive event for the new BMW 4 Series Coupe. We even had the chance to explore its limits on the famed Estoril circuit.

Join the fourplay here.