The meetings with centrist and left-leaning blocs in the European Parliament were the first part of von der Leyen's attempt to court the necessary majority for her ascension. She also stressed that the focus of her attention will be on promoting the rule of law, digitalization, competitiveness and the fight against climate change. European Parliament groups are grilling the German candidate for European Commission president before they take a vote on her appointment next week.
Von der Leyen, a 60-year-old former gynaecologist and mother of seven, switched between English, French and German as she spoke in favour of enlarging the euro zone and the EU's open-border Schengen area, provided countries meet the criteria. However, this depends on the EU's member states appointing women to be their commissioners - an appeal many ignored in 2014.
Smooth co-operation between the commission, the Parliament and member state governments is essential to European Union policy-making on everything from trade to migration to climate, she said.More news: Gordon questions need for Iceland resolution
MEPs will cast their ballots next week in a secret vote, meaning more MEPs could feel inclined to break party political lines, and reject von der Leyen.
The Green bloc was less than impressed with her answers, apparently, with Dutch Green MEP Bas Eickhout telling reporters after the meeting that she was "evasive on all the answers". Socialist leader Iratxe Garcia Perez said her group put specific policy demands to von der Leyen on fighting climate change, migration and gender equality.
"I know it was a bumpy start we had together", von der Leyen told legislators from the Renew Europe liberal group on Wednesday.More news: Angels throw combined no-hitter on night honoring Tyler Skaggs
The announcement confirms the original plans, even though rumours had been circulating in Brussels over pushing back the vote to give von der Leyen more time to lobby MEPs. But she needs more votes and some could come from the Socialists, the second largest grouping in the parliament.
Alongside von der Leyen, European leaders have choised the Belgian Prime Minister Charles Michel as new President of the European Council, the Spanish Foreign Minister Josep Borrell as High Representative of the Union for Foreign Affairs and Security Policy, and the French Christine Lagarde - now leading the International Monetary Fund - as the President of the European Central Bank.
The commission has a wide range of functions.More news: United Airlines cancels another 5,000 Boeing 737 Max flights
While Brussels debates the process of the nomination, especially the decision to cast aside the lead candidates chosen by the political groups in favour of a surprise nominee, environmental groups are warning that the election of the EU's most powerful job can not ignore people's demand for a greener Europe.