Recall on brakes,didn't help,still growl in reverse,now left rear tire is wearing bad. Ford dealer yesterday told me to rotate tires,at 32,ooo wouldn't that just give me 3 worn out tires instead of one! We love the car,wish they were US made . Try this,in start/stop mode,open drivers door,put one foot outside,car will start and drag your foot,shouldn't car shut off when door is open? Going to good tire store today to see if they have any thoughts on tire wear!