The Merseyside outfit were 3-0 winners against Watford at Vicarage Road on Saturday thanks to goals from Trent Alexander-Arnold, Mohamed Salah and Roberto Firmino.
Liverpool FC have only conceded five times in the Premier League this season, which is a marked improvement on previous campaigns under Klopp and Brendan Rodgers.
The Reds scored 84 times in the Premier League last season as Firmino, Salah and Sadio Mane formed a devastating attacking trio to help Liverpool FC finish in fourth.
Klopp’s side are on course to net 78 times in the current campaign after their attack initially struggled to hit the ground running in the 2018-19 Premier League season.
Indeed, Liverpool FC’s defence have played a key role in helping the title challengers to notch up some narrow victories in the opening months of the season.
Carragher played under Houllier and Benitez during his Liverpool FC career and the two managers earned a reputation for their defensive approach to games.
The former Liverpool FC defender believes the Reds have altered their style of play in the current campaign.
“Is it a little bit more like the Liverpool teams I played in?” Carragher told Sky Sports’ Monday Night Football.
“Last season I said this team plays football that our teams never played. But it’s actually now going back a little bit to maybe Benitez and Houllier’s sort of time.
“They probably do play a little bit more football than we did but they can actually rely on the defence to win them a game.”
Liverpool FC have won 10 of their opening 13 games in the Premier League, while drawing against Arsenal, Chelsea FC and Manchester City.