The Frenchman was sacked on Tuesday, and the Arsenal boss is not impressed.
The Frenchman left the club on Tuesday evening following a disappointing reign in charge at Villa Park.
After replacing Tim Sherwood at the club in November, he managed just two wins in his time, the lowest win percentage of any Villa manager.
He leaves them bottom of the Premier League table with relegation to the Championship looking a certainty at some point.
Wenger though, says his sacking is a disappointing one as he was not given the chance to bring the club back up.
“It’s disappointing. When he was appointed it was more of a long-term appointment at the time,” he told arsenal.com.
“Villa were in a very weak position to remain in the Premier League and I think he considered that they could go down. Unfortunately he wasn’t given the time to rebuild the team and have a go at coming up again next season.”
“Villa have been unstable with their managers over the recent years. It’s a good demonstration that [changing managers] is not a good solution to being successful.”
Who the Villains name as Garde’s replacement will now surely be one of their most important appointments in the club’s history.
Given that they look set for the Championship next season, they will need a manager who can quickly turn their fortunes around, as a stint in the second tier would not be appealing long-term.
Who that is remains to be seen, with former Manchester United boss David Moyes and ex Leicester City man Nigel Pearson currently looking like the frontrunners.