Agüero double lifts double lifts City

Argentine Sergio Agüero scored twice for 2011 winners Manchester City who eased into the quarter-finals with a confident display that was the complete opposite from their abject surrender in a 3-1 Premier League defeat at Southampton last weekend.

Yaya Toure's superbly-worked early goal set City on their way against Championship side Leeds and Aguero added a second from the penalty spot. Carlos Tevez bundled in a third soon after halftime and Aguero added a fourth after 74 minutes.

Second tier Huddersfield entertain top-flight Wigan Athletic in a 1555 GMT kickoff while Manchester United host Reading at Old Trafford on Monday (2000).

Three second-tier sides reached the last eight on Saturday, including Blackburn Rovers who stunned 10-times winners Arsenal with a 1-0 victory at the Emirates.

Everton, sixth in the Premier League, were taken to a replay after conceding a stoppage-time goal in a 2-2 draw at third-tier strugglers Oldham Athletic.