More than half of websites selling electronic goods and tested in an EU investigation were breaking European laws aimed at protecting consumers.
The analysis of 369 websites selling mobiles, DVD players and games consoles in 28 European countries found that 203 of them held misleading information.
The biggest failure surrounded the right to return a product bought on the internet within seven days.
Of the 203 cases facing further investigation:
Two-thirds (66%) failed to adequately explain that consumers had seven days to return a product bought over distance for a full refund and without giving a reason. Others failed to explain the right to have a faulty product repaired or replaced for at least two years after sale
Details about extra delivery charges were missing or difficult to find on the website in 45% of cases
A third (33%) did not fully outline the trader’s name, address or email details so they could not be contacted if there was a problem.