Listen to live commentary on 5 live & at top of this page
Jesus with four, De Bruyne, Zinchencko, Foden, Walker & Mahrez
Most Burton fans made it for kick-off after getting stuck in M6 traffic
Burton's first cup semi-final - Brewers are ninth in League One
Second leg on Wednesday 23 January
Tottenham lead Chelsea 1-0 from first leg in other semi
Man City 3-0 Burton
Dion Dublin
Ex-Aston Villa striker on BBC Radio 5 live
It's incredible to watch the way City are manipulating the ball. When you think there is no danger, they move the ball so quickly, and they get in behind your back four all of a sudden.
Gabriel Jesus
Again, Ilkay Gundogan is the architect. You just don't get passes like that in League One. He chips another of those 'Xavi' passes over the top which undoes the defence, David Silva squares it to Gabriel Jesus, who has time to take a touch and then fire in off the base of the post.
VAR is checked as Jesus was offside when the first pass was played - but he wasn't interfering at that stage. Goal stands!
Image source, ReutersMan City 2-0 Burton
Gary Flintoff
BBC Radio 5 live reporter at Etihad Stafium
The Burton Albion manager Nigel Clough is chatting away to first team coach Andy Garner inside the technical area. It rather looks like they are trying to work out where they go from here.
Text 81111 (UK only).
Maybe Burton aren't parking the bus because they're all stuck on the motorway?
Harvey, Reading
Man City 2-0 Burton
Away goals don't count in the semi-finals this season. But Burton may as well get one anyway to keep this interesting.
City have score 89 goals this season now. It's the second week of January.
Man City 2-0 Burton
Dion Dublin
Ex-Aston Villa striker on BBC Radio 5 live
That is good patience from City, who have waited for that one player to switch off and then run off the back of them. Lucas Akins was ball watching and Leroy Sane got in behind. Gabriel Jesus gets his first goal.
Man City 2-0 Burton
Chris Bevan
BBC Sport at Etihad Stadium
You might have thought Burton striker Liam Boyce would be having a quiet night tonight, with City dominating possession the way they are, but he has actually had the most touches from a Brewers player in the first 30 minutes, with 25. He's won all four of his aerial duels too.
Boyce is the only player in Burton's starting XI to cost a fee - and at £500,000 from Ross County in 2017, he is their record buy.
The Northern Ireland international has had an interesting career, playing for clubs in four countries - including a year in the Bundesliga with Werder Bremen when he was a teenager.
He is Burton's top scorer this season with nine goals although, for all his touches, he has not had a shot tonight yet. Still plenty of time for that though.
Image source, PAGabriel Jesus
A wonderful pass from Ilkay Gundogan opens up the packed Burton ranks. Leroy Sane plays a one-two with Gundogan, whose return ball is beautifully waited to find Sane in behind the defence.
Bradley Collins makes a decent save from Sane, the ball pops up in the air and Gabriel Jesus is able to head the loose ball home despite being surrounded by four defenders.
Image source, Reuters#bbcfootball
Luke: Brahim Diaz looks like he was right to move. City playing the most expensive side in league cup history. 2/3 of the starting XI tonight have been more than happy to sit on the bench all season to get a start against Burton
Mike: Another great turn out for a semi from the City fans...
Man City 1-0 Burton
Both sides have had just the one shot on target so far. Did we expect more from the hosts?
Man City 1-0 Burton
Dion Dublin
Ex-Aston Villa striker on BBC Radio 5 live
As good as City are, they still have to stay on their game. I just want to see them keep their standards up.
Man City 1-0 Burton
Another good attack from the Brewers, that man Lucas Akins causing trouble on the left of the area but he's closed down and City can break away.
It comes to Gabriel Jesus on the left, he cuts inside and threads a low shot just wide of the far corner. Bradley Collins in the Burton goal was struggling to reach that..
Man City 1-0 Burton
David Silva from that 'half-space' on the left of the penalty area threads two passes right across the line of the six-yard box in the space of about 30 seconds. Two good clearances from Ben Turner.
Image source, ReutersMan City 1-0 Burton
Another shot from Burton as Jamie Allen ends up slamming a shot way over from 25 yards. It was never threatening Arijanet Muric but again, the League One side's approach should be applauded.
At the other end Ilkay Gundogan gets his body language all wrong and slices a shot wide.
Man City 1-0 Burton
Dion Dublin
Ex-Aston Villa striker on BBC Radio 5 live
The linesman has got it spot on. It is a lovely dink into Riyad Mahrez and he caressed it into the top corner. Fortunately for Burton, he was offside.
Man City 1-0 Burton
What a finish! Riyad Mahrez puts the ball into the net with a wonderful volley, sort of intentionally off the outside of his foot/ankle, but the flag was raised. He was just offside too.
Image source, ReutersMan City 1-0 Burton
Chris Bevan
BBC Sport at Etihad Stadium
Kyle Walker had better be careful tonight - Burton left winger Lucas Akins was a childhood ballet star - also specialising in jazz and tap - before deciding on a football career instead.
He certainly showed quick feet to make space for that cross for Burton's big chance but just a shame about Marcus Harness's footwork at the end... Bruno Tonioli would not have approved.
Man City 1-0 Burton
Good play again from Liam Boyce, who spins his man inside the area and looks to get a shot away but he's tackled. Corner.
Burton look a threat when they attack.
Text 81111 (UK only).
It seems like Pep wants a respectable margin of goals in this first leg so that he has the opportunity to play youngsters in the second, and I'm OK with that!
Ethan
Man City 1-0 Burton
David Silva frees Leroy Sane down the left, he stands up a cross but there's nobody there. Burton are to be applauded, they are really having a go. Premier League sides park more buses than this at the Etihad.
Image source, EPA