Yes, it is about “Vorsprung durch Technik” (Advantage through Technology), but. . . .
By Gary S. Vasilash
While portal axles are usually used in things that are used by military vehicles or vehicles that go way off road, there are some like the Mercedes G500 that use them, too.
A key difference between a portal axle and a conventional one is that the portal axle is offset above the center of the wheel hub. There is a gear mechanism on the hub that transfers the power to drive the wheels.
The reason for the portal axle is to provide increased ground clearance.

Audi says it has developed new portal axles that it is using on a prototype Q6 e-tron offroad vehicle.
The prototype is based on the automaker’s Premium Platform Electric (PPE).
According to the company while conventional portal axles can increase torque from 20 to 30% at the wheels, Audi’s increases it by 50%.
Audi CEO Gernot Döllner said of the vehicle: “The model shows the potential that our platform for all electric vehicles already has today. This vehicle can claim new ground. We look forward to seeing our customers’ reactions to this highly emotive car.”
Presumably more than a few customers are going to think it looks like something that has undergone massive suspension tuning for display at a venue like SEMA, not as something that is, well, an Audi.
Somehow the “Premium” part is overwhelmed by the engineering of the axles.





