Not exact matches
But here's what you can't have
on the Audi: a choice of two biturbo dry - sump lubricated engines; Porsche Active Suspension Management (standard
on the Turbo) and an optional, height - adjustable air suspension; a rear - biased all - wheel - drive system that can quickly divert up to 100 percent of torque to either
axle via a multiplate electronic clutch; and available ceramic composite brakes and Porsche Torque Vectoring, the latter
distributing rear twist from side to side.
With more power and torque to
distribute the rear
axle is still easily overwhelmed, but,
on track at least, the car is actually very fluid and languid in the way it moves from neutrality into oversteer — rather than being spikey and difficult to control.
It allows torque to be
distributed to both drive
axles whilst allowing them to spin at different speeds, which vastly improves the cornering of a 4 wheel drive car
on surfaces with high grip such as tarmac.
Along with the boost in power, Audi has also added a new sports differential
on the rear
axle, which actively
distributes power beween the driven wheels.
It
distributes the drive forces asymmetrically 40:60
on the
axles - this guarantees both responsive handling and optimal performance.
The 4WD model grades feature Mazda's Active Torque Control Coupling 4WD System, which uses electronic control to optimally
distribute torque between the front and rear
axles depending
on driving conditions and the road surface.
ZF's tried - and - true eight - speed automatic takes that power, delivers it to an active transfer case to that goes
on to
distribute power to the front and rear
axles.
Based
on this data, BorgWarner's patented lightweight centrifugal electro - hydraulic (CEH) actuator
distributes the required torque between the two
axles by compressing the clutch pack, allowing the AWD transfer case to deliver pre-emptive and precise linear clutch actuation for immediate response, enhanced vehicle traction and stability control.
A bit further inside
on the right and left of the steering wheel are the plus and minus switches to adjust the front and rear traction control and to
distribute the brake balance between the front and rear
axle.
During regular driving, its electrohydraulic multi-plate clutch optimally
distributes the drive torque between the front and rear
axle depending
on driving conditions, road characteristics and driver type.
As is customary with BMW, the weight is
distributed between the two
axles in the 50 - 5o ratio, and depending
on the engine, the unladen weight could be reduced by up to 50 kilograms, despite the larger dimensions.
The xDrive system
distributes the power fully variable
on all models and prefers the rear
axle to deliver the driving experience of a particularly powerful rear - wheel drive BMW.
Power is
distributed through Dana AdvanTEK independent front and solid rear
axles on both 2WD and 4WD models with an available electronic - locking rear
axle (standard
on FX2 and FX4) for increased all - terrain traction.
You can see
on the dashboard how traction is balanced between
axles, and Porsche will also help you with something called PDCC Sport and PTV Plus, which essentially keep your car stabilized and help
distribute torque between rear wheels in sharp corners.
The AWD solution features an electronically controlled wet multi-plate clutch, which automatically
distributes the required amount of torque between the two
axles for the best possible traction
on practically all surfaces.