Young midfielder turned left-back Nico O’Reilly scored a quick-fire brace in the second half to secure the trophy for Man City.
Guardiola is now the most successful manager in the tournament’s history, winning five in his ten years at the club.
Speaking to Sky Sports after the game, Guardiola was delighted with the win after a “tough two weeks.”
"What can I say? When you win a trophy is important. It was special because we had a tough two weeks. What they did in the Champions League is so difficult," he said.
“In the first 15 minutes they suffocated us, we could not breathe. After that we won some second balls and started to play.
“I'm really pleased because Mikel created a team that is almost unbeatable. A fifth Carabao Cup in 10 years is not bad.
“Every time you win a title it looks more difficult than in the past. it is really difficult for many reasons."