2014 Fusion energi. Failed safety at 40k miles due to rusty rotors after the dealer said everything was fine. Machined. Less than four months later, 50k miles, dealer recommends machining the fronts again and replacing the rear. The pads are fine. The rotors are rusty, discolored and have begun flaking off in spots. Private shop says they would still currently pass a safety unlike 4 months ago but recommended they all be replaced soon (do not machine again, never should have been machined) and recommended some coated aluminum rotors that might resist the rust better from the lack of use hybrid brakes see. 80% highway miles with little to no stop and go traffic. I live in southern Ontario, Canada.