I don't think it's acceptable, period. I am American and that is not really a good sentence.
The only legitimate differences between the two usually have to do with the spelling of words. I have my computer spell check set to English(UK) and nobody I am talking to from America notices unless I mention my mother. "mum"
I draw difference as being when we can no longer understand one another at all.
A trunk is a chest or the nose of an elephant and pavement is what's on the side of the road. Is that different? If so I hadn't noticed.