Audi’s 4.2-liter V-8 engine features five valves per cylinder and produces 20 horsepower more than its predecessor; it’s now rated at 330 hp. A new six-speed Tiptronic automatic transmission replaces the prior five-speed unit incorporates a Dynamic Shift Program that reduces number of gear changes needed. An adaptive four-setting air-spring suspension continuous shock-absorber damping control for refined ride, it also permits speed-dependent lowering body increased directional stability higher velocities.