Mine does a downshift thing on occasion when I touch the brakes - 5th gear downhill 40/50 mph off the gas for several seconds. That is the only uneven braking I have observed. The car seems to have decent brakes for it's class. My previous car was lighter and hab PBRs all the way around - it took me a while to get used to stopping the IS. Of course the other cars in the family are a SUV and a 64 1/2 Mustang so I am not unaccustomed to braking early.
Terry
Terry