It has a 358hp V8 engine, but Audi has planned to produce RS5 which will have a V8 450hp engine
there is talk of making a RS5 in 2010 with a supercharged W10
2014 Audi S5 Cabriolet - 3.0L TFSI 333hp / 325lb-ft supercharged V6 w/ FSI direct injection.
Looking for a Used S5 in your area?
CarGurus has 971 nationwide S5 listings starting at $14,990.
Search Audi S5 Questions
Audi S5 Experts