The Performance coupe's performance coupe

The S5 doesn't take anything away from the A5- it only adds. The S5 Coupe, for example, adds a patent 4.2 FSI®  V8 that features 354 hp, while the S5 Cabriolet adds a supercharged 3.0 TFSI® with 333hp. It brings an agile, aggressive stance to an already powerful profile. And with a stiffer suspension, it helps to enhance its already dynamic handling. But most of all, the S5 is sleekly styles, propulsive energy for those who want to take performance to a more progressive level.

S5 Coupe

Engine

We give the freedom to rev away with the Audi 4.2 FSI V8 in the S5 Coupe. Delivering a robust 354 hp and 325 lb-ft of torque to an impressive performance portfolio, it's muscle, yet, but stylishly applied, so you look athletic, not bulked up. In addition, a sport differential can be added to Audi quattro® all-wheel drive, helping to give you more handling ability by actively controlling the torque distribution to the rear wheels, making for tights corning and sure footed driving.

Transmission

The six-speed manual and the optional six-speed Tiptronic® both offer smoother and more precise shifting through the gearbox, emphasizing a fast, energetic response. The manual puts you at center stage while the Tiptronic® adds automatic/manual flexibility and efficiency to your transmission.

S5 Cabriolet

Engine

Top-down driving with true power, the supercharged 3.0 TFSI V6 in the S5 Cabriolet brings efficiency to a formidable mix of 333 hp and 325 lb-ft of torque. With the top down, the performance engine puts a little kick into your cruising. Top up, it's an unmistakable sports car feel, with the power of augmented by the superior handling afforded by Audi quattro® all-wheel drive with available sports differential to help cornering and provide dynamic handling. 

Transmissions

The innovative S tronic® comes standard on the S5 Cabriolet. A duel-clutch gearbox capable of delivering incredibly quick shifts -as fast as 0.2 seconds, in fact-the S tonic transmission has duel input shafts and two clutch packs that help the system "predict" the driver's acceleration or braking input, pre-selected the next appropriate gear, and greatly reduce the shifting time.

Source:AudiUSA