I have a 2018 CX-5 GT with cylinder deactivation and have driven about 40,000 kms - no issues. It has had the software update to address the issue and to date, knock on wood, all is good. I also have a CX-30 GT that has the cylinder deactivation and again so far so good, no issues. It only really comes into play when your driving at a constant speed for a period of time, if your in the city it isn't ever going to engage due to starts and stops. I am aware of the recall for the 18 & 19 models but other than that, I haven't really heard of it being a big issue here in Canada.