A pair of Audi RS performance cars have been caught testing and show what the German brand has planned for these ultimate examples of the TT and A5. The TT-RS was snapped in production ready form and shows off some serious design tweaks including two gaping intakes flanking the already gaping corporate Audi grille, chunky fender flares at all four corners and a pair of large oval exhaust tips embedded in the rear bumper. Powering the TT-RS is expected to be a twin-turbo 2.5L five-cylinder engine producing between 350 and 390 horsepower, which will easily make it the fastest production TT ever.

It's not often that an automaker invites the press to drive a developmental test mule, but that's just about what happened recently at the Ricardo test circuit in Valencia, Spain, where Audi brought out four examples of what's being called an S5 Evo for select members of the automotive press to sample.

With the high-strung Audi RS5 looming large on the horizon, an entirely undisguised test mule has been spotted undergoing hot-weather testing in the infamous Death Valley in the southeastern United States. Picking up where the S5 left off, the test mule is wearing a new, more aggressive front end, which is expected to be matched around back by the time the model is unveiled at the Geneva Motor Show next March.