Google faced a deadline yesterday to defend changes to its shopping service that left old foes clamouring for a new wave of EU anti-competitive fines.

Google has offered to display rival comparison shopping sites via an auction, as it aims to stave off further EU competition fines, four people familiar with the matter said.

Google faces an anti-trust complaint at the European Commission after a French shopping-comparison website said the world’s largest search engine may have abused a dominant position.

Microsoft is filing an anti-competition complaint against Google with the European Commission.

Three complaints against Google about unfair competition are being studied by the European Commission, official in Brussels confirmed today.