I changed my oil and noticed the rear main seal is leaking to ( 42k miles ). I have a certified preowned and am bringing it to my local dealer to fix. I wouldn't be surprised if this is related to my low rpm shudder.
I have been researching this issue too. I purchased a 2021 Bronco Sport a couple of months ago. From what I have experienced, the shudder is at the low rpm of the motor ( 1500 rpm and under ). I have heard or read that an update is coming in another thread. I am not sure if that is true or...