"German reservations are taken into account fully, though perhaps only when you read the small print," he told Germany's Neue Osnabruecker Zeitung.

Mersch, honing in on one of Germany's main worries about the Quantative Easing plan announced by ECB President Mario Draghi on Thursday, said it involved "no shared liability (for member states' debts), as would be the case with euro bonds".

Germany's Bundesbank had opposed the ECB's bond-buying plan and the German government voiced reservations that it removed incentives for euro zone member states to carry out the kind of structural reforms prescribed by Chancellor Angela Merkel.

(Reporting by Stephen Brown; Editing by Angus MacSwan)