Welcome to the forum!
I believe all 3 trim levels have CD. But don’t let that be a deal-breaker. I’ve got a 2019 3 hatch, and I don’t even notice when CD comes on. The only way I know it’s doing anything different is by putting it on the display screen and see it. If no one ever told me about it, I’d never know it was even there.
More people seem to be concerned about the twist beam rear end, believing it’s inferior to the multi link on earlier models. I had a 2015 3 and a 2017 CX5 before this one, and again, I can’t feel the difference. I drive over some horrifically crappy roads daily, and this car feels perfectly planted in all conditions.
I’ve only had mine a couple of months, but I’ve had zero issues with it. It’s a lease, and I’m already planning on buying it out when it’s up, because I love the car. Just test drive one and see for yourself.
