Which part is confusing to you?
“optional” The optional lane change system Side Assist can warn you about dangerous lane changes.
Yes, it’s optional in some of the what, 17 models listed on the page. Like the Polo Life. In case you haven’t noticed, the page i linked is supposed to describe what that Side Assist actually is. It has nothing to do with the Tiguan directly.
It’s, as i said, standard in both R-Line and Elegance Tiguan – in fact, in all Tiguans. It’s not standard in the Polo, it’s standard in some Golfs, etc.
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.