Panamera Turbo S gets more power PORSCHE has raised the profile of the range-topping, turbocharged version of the Panamera by increasing its power and treating the car to the same exterior and interior upgrade as its less expensive stablemates. Six months after the Panamera was given a general makeover, the Turbo S now features a twin-turbocharged 4.8-litre V8 engine which boosts output to 570 horsepower. The revamp, which includes new turbochargers and tweaked fuel injection, is enough to propel the four-door sports limousine from zero to 100km/h in just 3.8 seconds. Porsche quotes a top speed of 310 km/h. Visual changes include a new front bumper and a larger rear window. A longer version with the wheelbase extended by 12cm and enhanced rear-seat legroom is badged as the Turbo S Executive. The Stuttgart maker will unveil the new models at the Tokyo Car show at the end of November. The most powerful Panameras enter showrooms next January.