Son Heung-min fired Spurs ahead after five minutes as the visitors switched off in defence and another lapse in concentration saw substitute Giovani Lo Celso run away from marker Kevin De Bruyne to steer home a second in the 65th minute.
The goals came from Tottenham’s only two shots on target, while City enjoyed more than 60 per cent possession but were unable to break down the hosts, who produced the type of display their manager has become famous for ever since his Porto days.
Guardiola refused to be drawn into whether Mike Dean was right to disallow the goal following the use of the pitchside monitor and instead focused on the defensive errors from his team.
He added: “I didn’t see it. Honestly I didn’t see this action.
“The assessment of the game, the stats speak for themselves. We were better in all departments but we concede a goal we cannot concede.
“We defend bad and after we put the perfect scenario for them.”