No idea on VAG, implementation timing differed across manufacturers and models. For me, Isofix is a real boon, I wouldn't go without again. Even tensioning up the seat belt secured seats as well as I could, they still had an amount of play in them which I found disconcerting. The quick installation and removal is a big additional benefit, of course more so if regularly moving seats around. The only issue I've ever found is when the Isofix bars are buried deep within the seat, I remember a sweaty wrestling session with a Toyota Previa before a nursery trip to Twycross Zoo.
No idea on VAG, implementation timing differed across manufacturers and models. For me, Isofix is a real boon, I wouldn't go without again. Even tensioning up the seat belt secured seats as well as I could, they still had an amount of play in them which I found disconcerting. The quick installation and removal is a big additional benefit, of course more so if regularly moving seats around. The only issue I've ever found is when the Isofix bars are buried deep within the seat, I remember a sweaty wrestling session with a Toyota Previa before a nursery trip to Twycross Zoo.