Audi S4 Avant Quattro spins all 4 wheels. That's important since, from the factory, it was given 339 horsepower and 302 lb-ft ...

But the Quattro Spyder Concept inspired the Audi TT and R8 sports cars, while the W12 engine from the Avus Quattro Concept went on to power various models of the VW Group, like the VW Phaeton ...