In the 918 RSR, the two electric motors offer a torque vectoring function with variable torque distribution
to the front axle.
For the first time this active all-wheel drive system can be paired with Porsche's new Porsche Torque Vectoring (PTV) Plus option. PTV Plus uses variable torque distribution
on the rear wheels as well as an electronically controlled rear axle differential lock, thus increasing both driving dynamics and stability in curves.
The variable torque distribution
system seamlessly transfers torque to all four corners of the car resulting in a well-balanced, great-handling wagon on wet or dry pavement and a snowmobile in the winter.
The Panda 4x4 uses a variable torque distribution
four-wheel drive transmission system.
The Legacy 2.5GT with the automatic utilizes the Variable Torque Distribution
(VDT) system that uses an integrated electronically-controlled hydraulic transfer clutch and planetary, gear-type center differential to control power between the front and rear wheels.
It was an eye-opener to discover how Fiat's 1.2-litre 60bhp petrol engine, mated to a five-speed manual gearchange, combined with the variable torque distribution
four-wheel-drive system which employs front and rear differentials and a rear mounted viscous coupling to work its off-road magic.