The naturally-aspirated V6 and V8 models benefit from an optional Sport Design Package which the flagship Porsche Panamera Turbo gains a Powerkit option which raises peak output by 30kW to 403kW.
The Powerkit consists of two new turbochargers with titanium-alloy turbine wheels combined with a new engine map to suit, boosting torque to 750Nm.
When combined with the Sport Chrono package, the Powerkit delivers a further 50Nm torque increase in overboost mode, bringing the peak output of the Porsche Panamera to 403kW and 800Nm.
On the road, this translates to an 0.1 second improvement to the Porsche Panamera Turbo's zero to 100km/h time - dropping under the 4.0 second barrier to 3.9 seconds.
The top speed has also increased slightly from 303km/h to 305km/h - with all the added horsepower resulting in no penalty to its fuel efficiency which is identical to the 500hp model at just 11.5-litres per 100km.
The Sport Design Package - available on all models - introduces new 20-inch Panamera Sport alloy wheels measuring 9.5-inches wide at the front and 11.5-inches wide at the rears.
While these wheels have the same contact area as the standard Porsche Panamera wheel, their offset has been optimised to sit flush with the wheel arch for a more distinctive look.
The Porsche Torque Vectoring Plus (PTV) system together with Porsche Dynamic Chassis Control (PDCC) and a fully controlled rear axle differential lock can also been included as an option for the Porsche Panamera.
The Sport Design Package also incorporates a unique front bumper design with wider black air intakes, separate side skirts and the standard, body-coloured rear underbody apron with diffuser and fins.
Most options - including the Powerkit - are available to retrofit to existing models, although Australian pricing and availability is yet to be announced.