Hey Andy,
Yes, my dealer only let me have 45 minutes... but that turned into an hour due to traffic jams - i did get a chance to see how good the nav was at getting around traffic problems - basically, it isn't - just like the Mk7.5 lol
I really like the automated driving tech - most of my driving isn't fun driving, its just driving. If I can get there feeling less exhausted then I'm happy with that. VW seem to be ahead in the tech game still though - BMW's tech is both not quite as good and paid for options. My 128 spec includes both digital dash and driving assistant - both expensive options. Even then I don't think either are going to be as good as the Mk8, maybe only just about on par with the Mk7.5.
Lane assist is as of 2020 mandatory on EVERY (new model) car - you won't escape it. All versions of it are unsuited to UK roads IMHO. Auto re-enabled at every start. Needs a mod with ODB11.
BMW get around the heating steering wheel option in a pragmatic way - you have to pay for it. Job done, don't pay.
The Golf's steering wheel is probably its weakest point. I didn't find the rest of the interior actually that objectionable.
My 128 test drive is next week - one of the unfortunate things though is that almost certainly the tech I want to test won't be on the demonstrator.
My biggest concern with the BMW though is comfort - BMW (particularly Mini) are notorious for uncomfortable seats unless you spec the full M Sport ones - which you can't do in the UK on a 128ti (and even if you did they don't match the rest of the car - just like the leather ones also look like they have been badly retro fitted). BMW's also lack seat belt height adjusters. So this rather basic fuinctional element is probably where the whole thing hangs - not clever suspension, not 0-60 times, not even the bloody steering wheel, the seats....
If find that rather frustrating and dissapointing if I am honest. We'll see.