I had a 1.1l petrol 106, replaced it with a 1.8 TDCi Focus.
The 106 (so the same probably goes for 107/C1/Aygo) was actually pretty good fun on my suburban-rural commute,, because 60mph felt really fast in it, so the fairly country roads were made interesting without driving above the speed limit.
I got the Focus and all of a sudden my commute got a bit more boring because it’s so much happier at higher speeds, it doesn’t feel ‘right on the edge’ at 50-60mph so if you wanted the same go kart experience as the 106 you’d have to go a lot faster.
But……I drive the Focus ‘briskly’, don’t tend to speed, but I get to cruising speed quickly and don’t have a problem overtaking if I need to. And I get around the same mpg as the 106 (50 in the 106, 48+ in the focus). And on the motorway it’s just so much more comfortable. 2-3 hours was about my limit for motorway driving, (probably any driving tbh) in the 106 after that the noise and general basicness really got to me. I went all the way to scotland in the Focus with no problem. My Focus is high mileage but a Ghia, so it’s got almost all the mod cons. Auto lights, wipers, dimming mirrors, A/c, heated leather seats, cruise control etc still runs well and is just such a more comfortable place to be.
The GFs 107 on the other hand seems to be exactly like my 106.
As others have said though, a Mway commute might mean rolling along at 30mph, but I’d still pick an ‘old’ Focus rather than a brand new rollerskate.