Although it is being referred to as a 5-Series family member, the car is actually expected to arrive on the same platform as the 7 Series. As such, the PAS is coming off as the ultimate tweener car: longer than a 5-Series sedan, yet shorter than a 7-Series; taller than a 5-Series, yet shorter than an X6. Cost is expected to straddle the gap, too: it should cost more than a 5 Series but less than a 7-Series. One description offered was "more of a 'tall 7-Series hatchback than a low-rise X6."
At the very front, the PAS is said to take cues from the CS Concept. That nose treatment flows into a sedan-like lower body topped by an X6 greenhouse, rear hatch, and rear end treatment. Interior design cues will come from the new Z4, and a roomy, semi-raised cabin is promised. Possible engines for the car in Europe include the 3.0-liter turbo diesel, while a 3.0-liter gas could would come to the States.