I have driven several Bolts before the recent update and own a ID.4 Pro S. The present Bolt is a bouncy ride with light steering that is okay in a city, but not on a twisting road. I have found the Bolt seats very uncomfortable (a bit short in depth of seat). By comparison the ID.4 is at a different level - handling is precise, super comfortable seats and suspension in class with other SUVs. I would prefer that the ID.4 had slightly less roll on twisting mountain roads, but it still is a pleasure.
The Bolt EUV seems to have made some improvements with a longer wheel base and seats for ride quality. I still think there target market is for city driving.
I second this. I had a 2017 Bolt LT lease for 39 months up until match 2021. Overall, loved it, but the ride was definitely bouncy and stiff feeling for my taste, and the one time I took it out on a mild dirt road, it did not feel settled on the road at all (compared to my AWD 2017 Golf Alltrack). Mind you, I'm no expert by any stretch of the imagination, and haven't driven a ton of different cars.
And yeah, the seats were just terrible for me for some reason. I am 6'1" ish, 170 lbs, and anytime I had to drive the Bolt for more than like 20 minutes I would get noticeably uncomfortable.
The ID.4 is just in a whole other class, imo, ride comfort is definitely softer but also feels more stable, even with these ridiculous 20" wheels, and the seats are nearly perfect (not high end luxury seats, I know, but I have essentially no experience with cars in that class), supportive but cushioned, and lots of adjustments in every direction.