NOW in its twilight years, the A5 still has plenty of fight left in it, as the ferocious RS5 Cabriolet proves.

With a 280km/h top speed combined with four seats and a roof that folds away in 15 seconds, the German autobahn stormer is for well-heeled folks who want to feel as well as hear the roar of the naturally aspirated V8 mounted up front.

But there are a couple of big prices to pay for the privilege.

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