My car 2018 1.4 SEL Hatch with DCC 235/45 R18
I drive like a grandad mostly, I'm a grown up now.
After 2.5 years, yes the suspension is very disappointing.
DCC makes only subtle difference between modes. Unless you knew you would not detect the difference. My son who drives 20k miles a year couldn't until I showed him.
Normal = simply the best compromise
Comfort mostly not much difference from Normal. But if you go over a speed hump you notice its bounce is not controlled, it continues well past the half cycle that it should control. Basically damping is very much reduced. With a road that has, what rail engineers call cyclic top, a series of dips and crests, even quite slight, it can get very hairy, very quickly and uncontrolled as it hits the natural frequency of the suspension
Sport = reminds you just how crap the road is. It doesn't seem to offer much in the way of improved handling, just you can hear and feel all the little bumps far more. Makes me feel sick and tired after a short while.
To me this car has obviously been set up for high speed motorway driving, it really starts to feel great at speeds of 80mph+ but that of course is illegal and licence robbing speed in the UK.
Its not too bad if it hits a bump, provided its on both sides straight on and going fast enough. But if you are go over a speed hump on just one side, its not pleasant, I think the arb has some blame here. If the road conditions make left and right sides do things out of sync over a certain level of unevenness, it gets messy.
In its defence, DCC does seem to assist sudden changes in direction and taking corners at reasonable speeds, more than a simple arb would. And thats regardless of mode. Very little lean. Maybe thats the Dynamic bit of DCC.
All in all it's a noisy affair, road roar is loud and constant (P7) and highly surface dependent. Road joints, manhole covers etc usually are loud slapping affairs. Potholes do bang loudly and can be very disturbing, but I doubt its the suspension bottoming, its just that the front setup in particular is not well isolated from the body.
Stupid low profiles just make it worse, would not buy a car with 45 or less profile again.
In summary, its a large barge with big armchairs on squidgy springs/dampers and in my case, hard wheels/tyres. Its size and wheelbase is never going to make it sporty, not that that interests me a great deal. Road noise and a tendency to wallow are its most annoying traits for me.
There is a short stretch of the M1 somewhere near Sheffield where everything is bliss, super silence and calm, sadly less than a mile or two. If only all UK roads were like that.