German voters, some dressed in traditional costumes, have been casting their ballots in a election that is widely expected to return the incumbent Angela Merkel to power.
There are some 62 million eligible voters in the country and approval ratings for Merkel have soared over 60 percent in recent years.
The first exit polls are expected around 6pm local time (5PM UK time).
More top news
Theresa May has launched her bid to become the next leader of the Conservative Party.
The government is set to announce that David Cameron's successor will make the decision on whether to expand Heathrow or Gatwick.
Michael Gove is to stand for the Conservative Party leadership, saying he does not believe Boris Johnson can "provide the leadership".