The Villans manager intimates that his troops might be as good as relegated if they lose to Spurs.
The Villans sit rock bottom of the table in what has been a dreadful season, winning just three of their 29 outings to find themselves nine points adrift of safety.
Their collective confidence suffered another blow at the weekend when Manchester City hammered them 4-0 at the Etihad Stadium in a defeat which did nothing positive for their goal difference - which is minus 33 at the moment.
It gets no easier for Villa, who welcome second-placed Spurs to the West Midlands this weekend, and the French manager says that it is imperative for his boys to pull out a much-needed victory.
"Tottenham is a very good side this season. It will be a crucial game for us," the ex-Lyon coach told the club's official website. "We will all have to be very committed and dedicated in that match."
Spurs, Chelsea, Manchester United and Arsenal - at the Emirates on the final day of the season - are four of Villa's final nine games of a campaign that, bizarrely, started with a 1-0 win at top-flight new boys Bournemouth.
That stood as Tim Sherwood's only triumph before being sacked in October, with Garde only managing two victories himself since being appointed - a 1-0 win over Crystal Palace and a 2-0 success over Norwich City.
They bring a four-match losing streak into the visit of Tottenham, and the writing might well be on the wall - if it isn't already - if they are beaten.