The four-door S5 Sportback is reviewed separately, it shares the same 349-hp V-6 powertrain and standard Quattro all-wheel drive as its two-door siblings. The coupe and cabriolet have a much smaller back seat and less cargo space than the Sportback, but their rich-looking and tech-heavy cabins have the same attractive design and upscale features. The S5's balanced ride-and-handling characteristics make it easy for the driver to switch from relaxed cruising to spirited driving.