Theo Walcott bagged a first-half brace.
Rob Holding also grabbed his first goal for the Gunners and Olivier Giroud converted a second-half penalty.
“Overall we had a team that was a mixture of experienced and young players,” Wenger said.
“We played with good pace, we maintained it for 65 minutes - the last 25 minutes were a bit more difficult.
“But I’m pleased with the performance.”
Jack Wilshere has returned to Arsenal following his loan stint at Bournemouth last season and is back to full fitness after a broken leg.
The England international started in central midfield for the Gunners tonight and impressed.
Wenger added: "He had an outstanding first half and he fought until the end.
"He is on a good way back to his best and he showed that tonight.
"He is at an age where a player usually gets to the best of his career.
"He has been stopped by a series of injuries. I just pray that he is not hampered any more.
"He has shown tonight he has not lost his quality."
