5. Porsche Panamera Turbo S - 570 HP
No top 10 list of the most powerful sedans would be complete without a vehicle from Porsche. The German automaker’s Panamera Turbo S packs a punch with its 4.8-liter V8 turbocharged engine sporting 570 hp and 553 lb-ft of torque. It’s expensive though, priced at $181,295 while getting 15 mpg in the city and 24 mpg on the highway. When equipped with the Sport Chrono option, the Panamera Turbo S launches to 60 mph in only 3.6 seconds.