For its final outing in B9 form, the S4 had both turbocharged ... all the way up through Black Edition to Vorsprung, the latter adding unique alloy wheels, the Audi Matrix LED headlights, standard ...
The Audi S4 (B9) delivers serious performance, luxury, and everyday usability—but is it so good that you don’t even need an RS4? Join me for my first drive as I put this sports sedan to the test!