Crude oil prices fluctuated amid concerns over U.S. tariffs on Canadian and Mexican imports but are set to end the week lower.

Oil prices fell on Wednesday, with the U.S. benchmark settling at its lowest year to date, after domestic crude stockpiles in the world's top petroleum producer and consumer rose more than expected last week.

U.S. crude oil inventories increased for the first time in 10 weeks, beating analyst’s expectations, as exports fell and refineries lowered their capacity use.