Went in for an oil change on my '16 CX-5 with about 80k. I asked them if you have to do a transmission drain and fill on these cars. The dealer recommended a transmission fluid exchange which is a flush according to them. They also recommended that it should be done every 60k. However, I have been going to dealers with the cx-5 for all oil changes and in the past, they never recommended any sort of transmission service. Also, the cost is $350. I didn't do it though because a flush worries me. I'll just take it to my independent mechanic who will do a drain and fill.