You can easily tell.
3 easy ways:
1)open your diesel fuel filler door, is there a urea filler port - blue cap? EA288
or
just a diesel fuel filler EA 189
2)Stand front of the car with the hood open.
Is the oil fill cap on the top- right hand side - that is a EA288 with Urea
or
oil fill cap on the top left hand side, that is the EA189- no Urea
3) also...
look and see if you can find the oil filter, if it is just front of the engine by your right hand.
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38 second into this video , shows the location
https://www.youtube.com/watch?v=7CIbPPJN3Ic
that is the EA 189 engine for USA.
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EA288 has the oil filter in the bottom