Vehicle: 2025 Audi Q4 e-tron Premium Plus quattro Safety concern: Side airbags failed to deploy during a significant driver's-side collision. On XXX, I was driving my 2025 Audi Q4 e-tron at approximately 45 mph in [XXX] when another vehicle, a Hyundai, struck the driver's side of my Audi near the front driver's door and front wheel area. Immediately before the collision, I noticed the other vehicle in my left peripheral vision and heard tires screeching. I do not know the Hyundai's actual speed. The impact caused extensive damage to the driver's side of my Audi, including the front and rear driver's-side doors, door seals, and surrounding structure. The front driver's door could not be fully closed afterward. My head struck the driver's-side window during the collision, and my glasses were dislodged. I was evaluated in an emergency department and diagnosed with a concussion. Despite the significant driver's-side impact, neither the driver's side curtain airbag nor the driver's seat-mounted side airbag deployed, to my knowledge. The airbags in the striking Hyundai reportedly deployed. My Audi continued traveling mostly straight after the collision until I brought it to a stop. I observed that the Hyundai had rotated after the collision. I am concerned that the Audi's side-impact restraint system may not have functioned as intended. I am requesting that NHTSA review this incident as a possible airbag nondeployment safety issue. Following the collision, the myAudi app displayed