Seems to be the norm with Mazda these days.So, my 2016 cx9 rear brakes wore way faster than my front brake pads which shouldn't happen.
I’m not sure this is uncommon. My 2005 and 2012 Honda Pilots both regularly went thru rear pads about twice as fast. My 2019 CX9 has 23k miles on it and it too only has 4mm left on the rear pads (vs 6 on the fronts). Maybe it just the brake bias on these SUVs it maybe its more of a handling setup from the factory. YMMV of courseSo, my 2016 cx9 rear brakes wore way faster than my front brake pads which shouldn't happen. I don't know if that is your case or not. I complained and also found some complaints online about the rear brakes sticking as a result of the E-Brake causing premature wear. My dealer ended up replacing my brakes for free. I should be getting an oil change soon and we are going to check to see the wear pattern. My car has 36k miles.