Seems a strange phenomenon. What is the cars powertrain is it hybrid? If the car is suitably matched to the caravan then I’d suspect you have a sensor issue in the powertrain, but that would normally show a warning. Are the car bakes okay solo?This is my first caravan so new to towing. I have a 2025 mazda cx-5 and a luna quasar. when towing my brakes are squeaky and it seems to be holding back especially on a hill im in 1-2 gear foot to floor and struggling to keep to 30mph. Is this normal ??