Joe Cole says West Ham's good form gives the players belief ahead of Saturday's Premier League clash at the Etihad Stadium.
The 31-year-old rejoined his boyhood club in January following an 18-month spell at Lille and has scored two Premier League goals since returning to Upton Park.
He told the official West Ham website: "We'll have to defend well and there will be spells of the game when we'll be without the ball and against world-class opposition.
"But we're going there full of confidence and we'll try to get the right result."
West Ham are currently unbeaten in five games and moved into the upper half of the Premier League table after beating struggling Wigan Athletic 2-0 at home last Saturday.
Although their opponents this weekend can no longer win the title, Cole believes Roberto Mancini's men still have something to play for, and will present a difficult challenge.
"City will be trying to sew up second place and players will be playing for their place in the FA Cup final as well," he said.
"Now we're looking forward and up the table for the first time. We're looking to finish in the top ten and that will be a massive achievement for the club."
West Ham are only three points off eighth-placed West Brom, and Cole suggests that is the highest the east Londoners could realistically finish this campaign.
"You're always constantly adjusting your targets and now we're looking forward and I think the highest we can probably finish is eighth so we'll look at that as our aim now."
Sam Allardyce's side have winnable home matches against Newcastle United and Reading after the clash with Manchester City, with a problematical trip to Everton sandwiched in between.