The first, second, and third gen regular CTS were all produced for 6 model years. With the CT4 and CT5 both having started in 2020, I'd bet 2026 will be the last year for both cars as well as both Vs and BWs. What is less clear is what production volumes will be. Most other V cars had significant production volume declines in succesive model year. I think the bigger question at hand is how many BW4 and BW5s will be produced. I'd ballpark around 5,000 of each BW for the total production run. As much as ADM's have been prevalent for these cars early on, I don't think the market will support production run volumes much greater than that.