Heavy Cars and Disregarded DriversOne thing that was agreed for 2026 was that F1 cars have become too heavy and cumbersome. Prior to leaving Mercedes, Lewis Hamilton reflected on how F1 cars have grown over the years he has been racing. They don’t have to change the regulations much to make the cars three seconds quicker, just make the cars lighter. But I do think cars follow each other more closely,” Autosport reports. The big test for the all-new F1 power units is yet to come.