"He has only been in charge for 18 months and you would like him to at least have four years."
England failed to qualify for the 1984 European Championships but Bobby Robson kept his job and went on to reach the World Cup quarter-finals in 1986 and the last four at Italia 90.
"They should repeat that (commitment)," added Wenger. "England's absence would be detrimental to the quality of the championships.
"In English football, in the short term it would be a big disappointment and they would get a massive slaughtering from the press.
"But in the long term it won't change a lot."