David, you have come onto a thread about the bmw i4 and have posted a long comment over the quality of the sound system on the car you (may) have ordered, information you have already posted on the forum in another thread. Why?
The SONOS system in the Q4 does receive excellent reviews: https://www.whathifi.com/reviews/sonos-premium-sound-system-audi-q4-e-tron