The 63-year-old leader, in power for nearly 12 years, also said she hoped to appoint equal numbers of male and female ministers from her conservative party if she wins a fourth term, though she could not speak for possible coalition partners.
In interviews with four young German YouTube personalities, including beauty, technology and politics video-bloggers, she spoke about issues ranging from refugees to climate and the importance of casting one's ballot.
She said her government would push on with the promotion of environmentally friendly electric cars, revealing that her main media spokesman drives one but that she could not because no automaker had yet manufactured an armored model.
She confided that her favorite emoticon was the smiley, sometimes with a heart attached.
Asked about the more serious issue of whether North Korea tensions and other international conflicts threatened to escalate into "World War III", she responded with a firm "no", adding that "we can avert such catastrophes".
Speaking about North Korea and the role of US President Donald Trump, Merkel said "we must be very careful with language, generally.
"Language can be the precursor to an escalation that, somewhere down the road, could lead to violence."