The turnout in the most recent European elections was 43%. The makeup of the EP doesn't support your claim either. It is dominated by essentially the same parties that rule on a national level.
That's true for the western part of the union, but it's very different in the eastern part. In the Czech Republic, it's been 31%, 28% and 28% (since 2004), and our voters are participating the most compared to other eastern states.