Chelsea FC have taken 17 points from their opening seven games and have been the surprise package so far this year after finishing fifth in the Premier League last term.
David Silva's late goal sealed the away victory as City got their Champions League campaign back on track after the shock 2-1 defeat at home to Lyon a fortnight ago.
For almost 90 minutes, Manchester City dominated possession and buzzed TSG Hoffenheim's net with chances that didn't much rile the hosts.
City boss Pep Guardiola was fuming on the touchline but his mood changed in the final minutes when Silva stole the ball off a defender and fired home for a dramatic victor.
A win over City on Sunday would lift Liverpool back to the top of the Premier League and provide a massive boost for the Reds heading into the second global break of the season.
"People can say what they like, especially Manchester United supporters, because I respect their point of view".
"We are the leaders again now since the last fixtures and after that game we still want to be number one". The Germans club was able to get a 2-2 draw in their first match in this tournament and the number of goals in each match is something we are seeing often.
Manchester City have conceded two or more goals in each of their past four Champions League games; they last conceded at least two goals in five consecutive matches back in March 2014.
"We created some good moments going forward and doing that against a side like Man City is something we can build on".