Audi S5 Cabrio Challenge Edition by STaSIS

Audi S5 Cabrio Challenge Edition by STaSIS

STaSIS Engineering has unveiled a new performance package for the Audi S5 Convertible. Dubbed the Challenge Edition, the model features a supercharged 3.0-liter V6 that has been equipped with a revised ECU and a stainless steel sport exhaust system...

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