Australian 2018 Hyundai Kona Highlander - Driving on the motorway the cruise control was activated the speed set for 100 kilometres an hour. The speed varied up and down the set speed by 3 to 5 kilometres an hour. I asked the lead mechanic about the issue and he said there is nothing that can be done to fix it. Every other car driven in the past 10 years maintained the set speed, just don't understand the reason why this car isn't performing to expectations described as Cruise Control, when there clearly is no control, other than not using it at all.