Quote Originally Posted by AnttiL View Post
When Toyota came up with the CD rack rear aero, Hyundai and Ford followed soon. Difficult to say if there was some similar revolutionary solutions for the other teams. Yaris aero mirrors?
Hyundai changed first in GB 2017 and only for Neuville so some 8 months later.
Ford changed for Finland 2018, 1,5 year later.

And those were only area increases not some massive redesign everywhere like the 2020 C3.