The four-door hatchback 2019 Audi S5 Sportback combines the comfort and convenience of the S4 sedan with the sleek looks of the S5 coupe. The S5 Sportback is powered by a turbocharged 3.0-liter V-6 engine with 354 horsepower and an ample 369 lb-ft of torque. A smooth-shifting eight-speed automatic transmission is standard, and it works with Audi's Quattro all-wheel-drive system to accelerate the Sportback with appropriate haste. In spite of its strong performance, the 2019 S5 Sportback is missing that special something that earns a car a spot in the sports-sedan hall of fame and in the hearts of enthusiasts. Its steering feel is distant, its chassis aloof. The Sportback benefits from the added versatility of its hatchback body and 22 cubic feet of cargo space behind its back seat. Practicality never looked so good; if only there were an equal amount of driver engagement.