The Colombian has promised Williams he will do all he can to help them win the constructors' title.
But BMW motorsport director Mario Theissen dismissed the comments, saying the driver himself was to blame.
On a pivotal moment on lap two, he was given a 'drive-through' penalty after an incident with Ferrari's Rubens Barrichello.
Michael Schumacher of Germany, driving a Ferrari, has won the San Marino Formula One Grand Prix.
Rubens Barrichello was 0.128 slower than Montoya in second place, while Schumacher was third with 1:20.784.
The Ferrari driver is one point ahead of Williams's Juan Pablo Montoya and two clear of McLaren's Kimi Raikkonen with two races remaining after Monza.\n\n
Real Madrid beat Leganes 2-1 in La Liga on Saturday after coach Zinedine Zidane heavily rotated his side in preparation for Tuesday's Champions League semi-final second leg against Bayern Munich, including leaving out top-scorer Cristiano Ronaldo.
Manchester United striker Robin van Persie is lacking confidence and struggling to make an impact in matches, according to his manager Louis van Gaal.
David Coulthard grabbed second place for McLaren, ahead of Jarno Trulli and Fernando Alonso in the two Renaults.
Here is a terrific quote that is doing the rounds from Chile's coach, Jorge Sampaoli.
Williams's Formula One championship challenge is on after they ousted McLaren as Ferrari's closest rivals.
The defending champion came seventh, one second behind stage winner Michael Matthews of Australia as Aru, who started the day with the yellow jersey on his shoulders, lost 25 seconds to the Briton in the final effort, a 600-metre climb at an average gradient of 9.6 per cent.
Rodriguez whipped Everton in front from the edge of the box, and Michael Keane and Calvert-Lewin ensured it was two wins from two in the Premier League so far this season.
Second-seed Lleyton Hewitt moved into the quarter-finals of the Washington Open with a routine 6-3 6-2 win over Colombian Alejandro Falla on Wednesday.
Bayern Munich have signed midfielder James Rodriguez from Real Madrid on a two-year loan deal with an option to buy the player, the German champions said on Tuesday.
The six-times world champion was 0.362 of a second quicker than Colombian Juan Pablo Montoya's Williams.
Kerala Blasters missed a crucial second-half penalty kick and had to settle for a 1-1 draw against rivals Chennaiyin FC in the Hero Indian Super League football, in Kochi, on Saturday.
Montoya was black-flagged after 57 of the 73 laps and retired in the pits while third.
The Colombian will race for McLaren in 2005 after completing his contract with Williams.
Federico Montoya will drive for the Berlin-based Muecke team in the German Formula BMW series next year.
The Scot is looking for a drive after McLaren signed Colombian Juan Pablo Montoya from Williams for 2005.
FIFA president Gianni Infantino, whose election promises included expanding the World Cup finals to 40 countries, on Monday proposed an even larger tournament involving 48 teams.
The German won a wet and wild US Grand Prix while Colombian rival Juan Pablo Montoya's title hopes were blown away.
Ferrari's Michael Schumacher can win a record sixth Formula One championship at Indianapolis on Sunday if circumstances go his way.
The defending F1 champion expects the title to be decided by a last-race duel between himself and the Colombian.
The German world champion now has 82 points to second-placed Montoya's 79.
Ferrari's ace is resigned to the idea of his younger brother helping the Colombian become world champion at his expense.
"Sergio Aguero will be assessed by Club doctors today after being involved in a road accident on Thursday," City said of the Argentina striker in a statement on their website. (www.mancity.com)
