"Germany's like sitting back silent, collecting money and making a fortune with probably the greatest leader in the world today, Merkel", Trump said in a 2015 interview with United States news magazine Time.
On Monday, Merkel showed how seriously she is concerned about Washington's dependability under Trump by repeating the message she delivered a day earlier that the times when Europe could fully rely on others were "over to a certain extent".
"The Prime Minister has allied herself with Donald Trump and these comments are the inevitable outcome", Liberal Democrat leader Tim Farron said.
"As far as wiretapping, I guess, by - you know - [the Obama] administration, at least we have something in common, perhaps", Trump said in March during a press conference with Merkel.
After returning to the US from his first worldwide trip, President Donald Trump said the relationship between Germany and the U.S is " very bad" and "will change".
Merkel suggested the G7 summit a wakeup call as policy differences emerged between Germany and the U.S. At the summit, Trump was the only leader unable to commit to the 2015 Paris Agreement, which is aimed at slowing global warming.
Soon after her statement, Trump tweeted, "We have a MASSIVE trade deficit with Germany, plus they pay FAR LESS than they should on North Atlantic Treaty Organisation & military".
"Europe and the world are facing lots of challenges and to fight those, India believes, the world needs the strong leadership of Chancellor Merkel", Modi added.
Merkel, however, had also said Germany's relationship with the USA was of "outstanding importance" but it must also engage with other important nations.
"This year, we have closely been closely been cooperating amongst others also in topic that are on the agenda of G-20, yesterday evening we had a detailed discussion for example the topic of terrorism, the threat terrorism possesses and we all suffer from consequences of terrorism", she said.
In Berlin, Merkel reiterated her position that "we in Europe have to take our fate into our own hands". PM Modi also added that Germany contributed in a big way in the success of 'Make in India.