The German site lists the CVCC for both City Turbo I & II, but I think only City Turbo I (which was a carb car if memory serves) had CVCC, the fuel injected City Turbo II didn't have CVCC.
CVCC was a neat solution for its day with a stratified or segmented combustion chamber which had a big part of the chamber with a lean fuel mix and a small part with a rich mix, I think it was the first "lean burn" engine. It got a lot of attention in the 70s in connection with the original Civic, Accord, Prelude ranges, more for it's economy and ability to pass emissions without hand on devices rather than sheer performance. I think many people at the time didn't realise it had 3 valves per cylinder, given two was the norm. Also I don't think many realised that CVCC lived on well into the 1980s. The thing was that the 70s cars wore their CVCC badge proudly on the front grille.