EU Directive 1999/44/EC sets minimum of 2 years for consumer products, and requires that for at least the first 6 months the seller has to prove that the defect did not exist when they sold the product, afterwards it switches to the consumer. National law is allowed to specify longer periods, and does in some countries.

Note that it is the seller, not the manufacturer, on the hook for this.

I don't know a good english summary, but here you can at least find the full text of the directive: http://www.kapitalmarktrecht-im-internet.eu/en/Areas%20of%20...