Q1:What were the significant advancements in the airbag configurations of all generations of Audi A8?

A: First Generation (D2, 1994): It was the first to introduce dual airbags at both the front and rear of the vehicle, setting the benchmark for passive safety in luxury cars. 
Second Generation (D3): Added head curtain (Sideguard) and rear side airbags, expanding the protection area; 
For the third generation (D4) and beyond: The pre-safety system linkage has been introduced, and more airbags and side airbags are standard equipment. 
Fourth Generation (D5, 2017 to present): New front central airbag is added. Knee airbag is optional for some versions. It supports deep integration with the 360° Prevention Safety System.

Q2: How does the airbag system of the Audi A8 work in conjunction with seat belts and the vehicle body?

A: The passive safety of the Audi A8 is achieved through systematic coordination: 
Seat belt pre-tensioning/force limiting: Before the collision (through the pre-sensing system) or at the moment of impact, the seat belt pre-tensioning device pulls the occupant into the optimal seating position, while the force limiter prevents the restraint force from being too high. 
Body structure configuration: ASF fully aluminum space frame combined with high-strength steel, dividing the crush zone and the rigid passenger compartment to ensure the integrity of the cabin during airbag deployment; 
Multi-level ignition logic: The airbag ECU controls the inflation volume of single-stage or double-stage based on the impact force and angle, matching different collision conditions.

Q3: What are the core components of the passive safety system of the Audi A8?

A: The Audi A8, as the flagship D-class luxury sedan of the brand, has a passive safety system centered around a multi-module airbag system, pre-tensioning force-limiting seat belts, and a highly rigid body structure. All models are equipped with front and rear driver/passenger frontal airbags, front and rear side airbags, and head airbags (side safety airbags) for the front and rear seats. In mid-to-high-end models and the latest year models, an additional front central airbag is also installed. Some market versions are equipped with knee airbags, forming a multi-dimensional restraint protection for the cabin.