With the reveal of Audi’s rakish A7 sports liftback in the summer of 2010, we knew it was only a matter of time before the Ingolstadt-based automaker enhanced the range with a top-spec model wearing the S badge and down the line, an even gutsier version with the firm’s famed RS moniker.
We’re still waiting for the RS7 but the development of the S7 appears to be reaching its final stages as you can see in these photos of a prototype spied in Europe. Being that unlike the flashy-looking RS range, all of Audi's ‘S’ branded models are rather inconspicuous, it comes to no surprise that the only telling feature of the prototype model other than the S-Line aero package, which can be had on all A7s, are the four-exhaust pipes at the back.
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