Joshua Kimmich opened the scoring for Germany from the penalty area 10 minutes later, before Ilkay Gündoğan added a second from the penalty spot at half-time.
Thomas Müller made it 3-0 five minutes into the second half before Timo Werner scored two goals in less than two minutes, the second of which came after a mix-up in the Italian defense that made the game even more out of reach. for Italy.
Wilfried Gnonto recovered the ball from close range when Manuel Neuer’s save, the 18-year-old’s first for Italy, got in his way, while Alessandro Bastoni’s header from a corner turned out to be a late consolation goal.
The result means that Flick is still undefeated after 13 games as the Germany manager scored a historic first victory against Italy in their 11th meeting.
“We are angry, today we have no excuses,” goalkeeper Gianluigi Donnarumma said.
“We have to look each other in the eye and start again to show that this is not the real Italy. We didn’t have enough today.”
It was also evening for England, Italy’s opponents in last year’s Euro 2020 final, after a 4-0 defeat to Hungary at Molinho – Hungary’s first away win against England since 1953.
Despite the Three Lions dominating the early stages of the match, Hungary took the lead when Roland Szallay scored a free-kick into the box.
Reece James headed from the line to prevent Hungary from scoring another goal later in the first half, but Sallay again stunned the home team in the 70th minute with his second goal.
Things went from bad to worse for England, with Adam Nagy crashing in Hungary’s third match, John Stones being sent off for a second yellow card and Daniel Gazdag completing the rout.
The defeat was England’s second consecutive loss to Hungary and the fourth game without a win in the Nations League this season.
“I chose a very young team, that’s my responsibility,” said head coach Gareth Southgate.
“I didn’t have the right balance in two games against Hungary. After the first goal, anxiety crept in a bit and we couldn’t recover from it.”
The next round of A3 groups will take place on 23 September. Italy will take England and Germany will take Hungary.