Audi would probably prefer you not to realise this, but the five distinct versions of S4 and S5 on the market all pertain to a single performance and equipment formula spread across five different ...
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Audi RS4 vs S4 – Stock Drag Race on Runway
At a private runway, the latest Audi RS4 takes on a stock B9 S4 in a series of drag and rolling races. Both cars feature Quattro all-wheel drive and similar 3.0L turbocharged setups, but the RS4’s ...
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