Johnson came on as a 10th minute replacement for Theo Walcott after he was stretchered off with an ankle injury and immediately excelled.
Not only did he grab his second England goal in two games, the 23-year-old ran Switzerland ragged with his electric pace and clever tricks.
Johnson, who scored against Bulgaria last Friday night, said: "The mood is very good. Two great wins. Everybody's happy. We look forward to meeting up again."
Johnson was one of six City players who finished the game and he said: "It's a credit to City. I hope it continues."