Wheelbase and tow vehicle weight probably affect the complex industry standards (SAE, DIN, etc) used to determine the rating. Unibody strength and receiver attachment joints probably come into play too. It’s complicated stuff. I’ve read the Cayenne 8-speed transmission with torque converter replaced the original dual clutch tranny specifically to optimize towing performance. Horses for courses.So the Macan towing capacity is 4400 lbs max, vs 7700 lbs max for the Cayenne.
Why such a big difference?
It can't be the engine or brakes, because some Macan models have at least as much, if not more, engine and braking capacity than some Cayenne models
What would it take for Porsche to significantly increase the towing capacity for the Macan?