I downloaded the Smart Forfour manuals, plural meaning I got the Portuguese and the English version.
Funny thing is that the Portuguese one says that for example my version, the 1.1 has 3.2 liters of capacity when changing the oil and the English version states 3.5, so 0.3ltrs difference. And it's not just for mine, that increment goes for all the engines.
Does anyone know why? I always went with the 3.2 when doing the change and of course controlling the amount on the dipstick, but it's really weird this difference between the manuals.