EP votes 384 to 175 in favour of unbundling search engines; 56 MEP's abstained from the vote.
European Parliament has no power to force Google to split into seperate companies.
European Commission, which is investigating Google over anti-trust issues, holds regulatory power.
EP press release said MEP's 'stressed the need to prevent online companies from abusing dominant positions by enforcing EU competition rules and unbundling search engines from other commercial services'.
Leading U.S politicians in Congress have written to leaders of main political blocs in the European Parliament expressing concern about proposals to curb Google's market dominance (FT).
European Parliament expected to vote on demand for Google to be broken up into separate companies on Thursday; though it has no power to enforce such a measure.
U.S mission to the European Union has also voiced concern.
In email first reported on by the Wall Street Journal, U.S mission says: 'It is important that the process of identifying competitive harms and potential remedies be based on objective and impartial findings and not be politicised'.